This document discusses guidelines for writing high quality code. It covers several topics:
1. What is high quality code and code quality, focusing on aspects like understandability, maintainability, and self-documenting code.
2. Examples of good and bad practices for variables and statements based on Code Complete 2nd edition. This includes guidelines for naming, initializing variables, avoiding magic numbers and literals.
3. Examples of self-documenting code through style, commenting conventions, and ensuring the code explains itself without additional comments.
4. An overview of how to create high quality code, including following best practices for variables, statements, and self-documenting code. The discussion also covers software construction activities
This slide created for shared internal and for everyone interesting clean code. Why we needed? Why you should use it?
Ps. Sorry if my grammar is very bad :D
Every change to a codebase increases technical debt leaving it less stable, bug-prone, and closer to technical bankruptcy requiring a rewrite. Let's explore how to measure technical debt to gain a score and highlight the current condition of a PHP application. We will then introduce simple steps for improving code quality, deliver new features faster, and lower project stress.
Presentation I held before my colleagues about the book Clean Code (http://www.amazon.com/Clean-Code-Handbook-Software-Craftsmanship/dp/0132350882).
It contains the highlights of several chapters and hint/guidelines a developer should know.
Unit tests are great, they help a developer gain control over his code and catch bugs and regression issues.
Test Driven Development is a methodology that uses unit tests but it's not about writing unit tests - in fact the tests are only a design tool.
TDD is a methodology that solves problems in an iterative way, it's about emergent design that creates a maintainable solution.
In this session I'll talk about common mistakes and misconceptions, how to benefit from TDD and show how to design your code using unit tests.
The code for this talk can be found on GitHub: https://github.com/dhelper/DesignWIthTests
This slide created for shared internal and for everyone interesting clean code. Why we needed? Why you should use it?
Ps. Sorry if my grammar is very bad :D
Every change to a codebase increases technical debt leaving it less stable, bug-prone, and closer to technical bankruptcy requiring a rewrite. Let's explore how to measure technical debt to gain a score and highlight the current condition of a PHP application. We will then introduce simple steps for improving code quality, deliver new features faster, and lower project stress.
Presentation I held before my colleagues about the book Clean Code (http://www.amazon.com/Clean-Code-Handbook-Software-Craftsmanship/dp/0132350882).
It contains the highlights of several chapters and hint/guidelines a developer should know.
Unit tests are great, they help a developer gain control over his code and catch bugs and regression issues.
Test Driven Development is a methodology that uses unit tests but it's not about writing unit tests - in fact the tests are only a design tool.
TDD is a methodology that solves problems in an iterative way, it's about emergent design that creates a maintainable solution.
In this session I'll talk about common mistakes and misconceptions, how to benefit from TDD and show how to design your code using unit tests.
The code for this talk can be found on GitHub: https://github.com/dhelper/DesignWIthTests
This presentation introduces the principles of high-quality programming code construction during the software development process. The quality of the code is discussed in its most important characteristics – correctness, readability and maintainability. The principles of construction of high-quality class hierarchies, classes and methods are explained. Two fundamental concepts – “loose coupling” and “strong cohesion” are defined and their effect on the construction of classes and subroutines is discussed. Some advices for correctly dealing with the variables and data are given, as well as directions for correct naming of the variables and the rest elements of the program. Best practices for organization of the logical programming constructs are explained. Attention is given also to the “refactoring” as a technique for improving the quality of the existing code. The principles of good formatting of the code are defined and explained. The concept of “self-documenting code” as a programming style is introduced.
In this whitepaper, LearnItFirst founder Scott Whigham talks about how you can become a good (or better) C# programmer. This whitepaper is long - 15 pages - but it includes both a step-by-step system to follow as well as an in-depth discussion of each step.
If you follow this 13-step system (with a bonus 14th step), you can’t help but become a good C# developer!
Software Craftsmanship - Introduction to Code SmellsRajat Singla
This is my second presentation on software craftsmanship. My previous presentation was a high level view highlighting the dire need of software craftsmanship on top of agile in software development.
This presentation (and the subsequent series on code smells) deep dives into the technical aspect of software craftsmanship highlighting ways to structure your code and write a well crafted software.
Eurostaff Connect(s) meetup, 10.03.2016, betahaus Hamburg
Code Reviews are a de facto standard for most teams. Either as a general four eyes principle, via pull requests or as a real team meeting. Each and every of these methods has their own pros and cons. Avoiding bugs and is typically the main reason why code reviews are introduced, but how often do you really find serious bugs in your code reviews? This talk will give some insights into how to use code reviews as a method to establish a common understanding of code quality in your team. Using reviews tools is usually the second step in that process, after the developers have established a mindset for good quality.
ehaviour-driven development (BDD) started as an improved variation on test-driven development, but has evolved to become a formidable tool that helps teams communicate more effectively about requirements, using conversation and concrete examples to discover what features really matter to the business. BDD helps teams focus not only on building features that work, but on ensuring that the features they deliver are the ones the client actually needs.
• Learn what BDD is, and what it is not
• Understand that the core of BDD is around conversation and requirements discovery, not around tools.
• Understand the difference and similarities between BDD at the requirements level, and BDD at the coding level.
Learn what BDD tools exist for different platforms, and when to use them.
This is a variation on the talk I gave at Agile Australia, that I delivered at the Sydney Agile meetup on July 15 2014.
You will learn why naming is really difficult if done right, why coding and style guidelines are crucial, code structuring, exception handling and why other elements of coding often define the tipping point between success and failure of projects. Following the principles of software craftsmanship will allow you to end up with better maintainability and extensibility of your software and the success of the project in the end. All 3 Clean Code presentations provide great value by themselves, but taken together are designed to offer a holistic approach to successful software creation.
Why writing Clean Code makes us more efficient Over the lifetime of a product, maintaining the product is actually one - if not the most - expensive area(s) of the overall product costs. Writing clean code can significantly lower these costs. However, writing clean code also makes you more efficient during the initial development time and results in more stable code. You will be presented design patterns and best practices which will make you write better and more easily maintainable code, seeing code in a holistic way. You will learn how to apply them by using an existing implementation as the starting point of the presentation. Finally, patterns & practices benefits are explained.
This presentation is based on C# and Visual Studio 2013. However, the demonstrated patterns and practice can be applied to every other programming language too.
Note: Moving forwards this presentation will be updated with the latest version of the slides for the last event I did the presentation instead of creating new separate slide decks here on SlideShare.
Presentation dates and locations:
2015-06-27 SoCal Code Camp - San Diego, CA
2014-11-14 SoCal Code Camp - Los Angeles, CA
2014-10-18 Desert Code Camp - Chandler, AZ
UXDX London 2018 Nik Crabtree - Enhancing the Processes of Test Driven Develo...UXDXConf
As the Lead Principal Software Engineer in ASOS Technology, Nik Crabtree is responsible for Software and QA Engineering, UI Engineering and Data Engineering across the organisation. His role has a simple brief: come in every day with one aim - make engineering and engineers at ASOS better.
On May 10th, Nik spoke to the UXDX London audience about test, deploy and solving problems fast! He highlights why people should adopt a test-driven-development approach.
Shared understanding, shared ownership and a test-first approach leads to high quality software, trust and high performance.
Defensive programming
Organizing straight-line code
Using Conditionals
Controlling Loops
Unusual Control Structures
Table-Driven Methods
General Control Issues
Layout and Style
Code Tuning Strategies
Pragmatic Programmer
Estimating (提升专业素养)
DRY rule - Repeat or Reuse (提炼经验)
Control Structures & Complexity (简洁就是美)
Table Driven (善于运用算法)
Design for CHANGE (完善设计、争取主动)
Refactoring (追求卓越,勇于改进)
Automation (一切都要自动化)
Resource
Who is working for you (找个巨人的肩膀)
Accessories for you
Process and Methods
Process enhances confidence
Thought Disorder(最容易欺骗的人是自己)
Conceptual Blockbusting
Career anchors
How to define the VALUE (价值不等式)
Professionalism
This presentation introduces the principles of high-quality programming code construction during the software development process. The quality of the code is discussed in its most important characteristics – correctness, readability and maintainability. The principles of construction of high-quality class hierarchies, classes and methods are explained. Two fundamental concepts – “loose coupling” and “strong cohesion” are defined and their effect on the construction of classes and subroutines is discussed. Some advices for correctly dealing with the variables and data are given, as well as directions for correct naming of the variables and the rest elements of the program. Best practices for organization of the logical programming constructs are explained. Attention is given also to the “refactoring” as a technique for improving the quality of the existing code. The principles of good formatting of the code are defined and explained. The concept of “self-documenting code” as a programming style is introduced.
In this whitepaper, LearnItFirst founder Scott Whigham talks about how you can become a good (or better) C# programmer. This whitepaper is long - 15 pages - but it includes both a step-by-step system to follow as well as an in-depth discussion of each step.
If you follow this 13-step system (with a bonus 14th step), you can’t help but become a good C# developer!
Software Craftsmanship - Introduction to Code SmellsRajat Singla
This is my second presentation on software craftsmanship. My previous presentation was a high level view highlighting the dire need of software craftsmanship on top of agile in software development.
This presentation (and the subsequent series on code smells) deep dives into the technical aspect of software craftsmanship highlighting ways to structure your code and write a well crafted software.
Eurostaff Connect(s) meetup, 10.03.2016, betahaus Hamburg
Code Reviews are a de facto standard for most teams. Either as a general four eyes principle, via pull requests or as a real team meeting. Each and every of these methods has their own pros and cons. Avoiding bugs and is typically the main reason why code reviews are introduced, but how often do you really find serious bugs in your code reviews? This talk will give some insights into how to use code reviews as a method to establish a common understanding of code quality in your team. Using reviews tools is usually the second step in that process, after the developers have established a mindset for good quality.
ehaviour-driven development (BDD) started as an improved variation on test-driven development, but has evolved to become a formidable tool that helps teams communicate more effectively about requirements, using conversation and concrete examples to discover what features really matter to the business. BDD helps teams focus not only on building features that work, but on ensuring that the features they deliver are the ones the client actually needs.
• Learn what BDD is, and what it is not
• Understand that the core of BDD is around conversation and requirements discovery, not around tools.
• Understand the difference and similarities between BDD at the requirements level, and BDD at the coding level.
Learn what BDD tools exist for different platforms, and when to use them.
This is a variation on the talk I gave at Agile Australia, that I delivered at the Sydney Agile meetup on July 15 2014.
You will learn why naming is really difficult if done right, why coding and style guidelines are crucial, code structuring, exception handling and why other elements of coding often define the tipping point between success and failure of projects. Following the principles of software craftsmanship will allow you to end up with better maintainability and extensibility of your software and the success of the project in the end. All 3 Clean Code presentations provide great value by themselves, but taken together are designed to offer a holistic approach to successful software creation.
Why writing Clean Code makes us more efficient Over the lifetime of a product, maintaining the product is actually one - if not the most - expensive area(s) of the overall product costs. Writing clean code can significantly lower these costs. However, writing clean code also makes you more efficient during the initial development time and results in more stable code. You will be presented design patterns and best practices which will make you write better and more easily maintainable code, seeing code in a holistic way. You will learn how to apply them by using an existing implementation as the starting point of the presentation. Finally, patterns & practices benefits are explained.
This presentation is based on C# and Visual Studio 2013. However, the demonstrated patterns and practice can be applied to every other programming language too.
Note: Moving forwards this presentation will be updated with the latest version of the slides for the last event I did the presentation instead of creating new separate slide decks here on SlideShare.
Presentation dates and locations:
2015-06-27 SoCal Code Camp - San Diego, CA
2014-11-14 SoCal Code Camp - Los Angeles, CA
2014-10-18 Desert Code Camp - Chandler, AZ
UXDX London 2018 Nik Crabtree - Enhancing the Processes of Test Driven Develo...UXDXConf
As the Lead Principal Software Engineer in ASOS Technology, Nik Crabtree is responsible for Software and QA Engineering, UI Engineering and Data Engineering across the organisation. His role has a simple brief: come in every day with one aim - make engineering and engineers at ASOS better.
On May 10th, Nik spoke to the UXDX London audience about test, deploy and solving problems fast! He highlights why people should adopt a test-driven-development approach.
Shared understanding, shared ownership and a test-first approach leads to high quality software, trust and high performance.
Defensive programming
Organizing straight-line code
Using Conditionals
Controlling Loops
Unusual Control Structures
Table-Driven Methods
General Control Issues
Layout and Style
Code Tuning Strategies
Pragmatic Programmer
Estimating (提升专业素养)
DRY rule - Repeat or Reuse (提炼经验)
Control Structures & Complexity (简洁就是美)
Table Driven (善于运用算法)
Design for CHANGE (完善设计、争取主动)
Refactoring (追求卓越,勇于改进)
Automation (一切都要自动化)
Resource
Who is working for you (找个巨人的肩膀)
Accessories for you
Process and Methods
Process enhances confidence
Thought Disorder(最容易欺骗的人是自己)
Conceptual Blockbusting
Career anchors
How to define the VALUE (价值不等式)
Professionalism
Tout comme on fait attention au style d'écriture utilisé lorsque l'on rédige un livre, en plus d'appliquer les règles d'orthographe et de grammaire, il faut également appliquer des règles stylistiques lorsqu'on rédige du code.
Cette conférence présente plusieurs aspects à prendre en compte pour rédiger du code de qualité, allant de la structure globale d'un programme à la mise en page de son code, en passant par les noms des variables.
How I Learned to Stop Worrying and Love Legacy Code.....Mike Harris
Legacy Code. I never wrote it; everybody else did!
How many times have you waded through an ageing, decaying, tangled forrest of code and wished it would just die?
How many times have you heard someone say that what really needs to happen is a complete rewrite?
I have heard this many times, and, have uttered that fatal sentence myself.
But shouldn’t we love our legacy code?
Doesn’t it represent our investment and the hard work of ourselves and our predecessors?
Throwing it away is dangerous, because, before we do, we’ll need to work out exactly what it does, and we’ll need to tweeze out that critical business logic nestled in a deeply entangled knot of IF statements. It could take us years to do, and we’ll have to maintain two systems whilst we do it, inevitably adding new features to them both. Yes we get to reimplement using the latest, coolest programming language, instead of an old behemoth, but how long will our new cool language be around, and who will maintain that code, when it itself inevitably turns to legacy?
We can throw our arms in the air, complaining and grumbling about how we didn’t write the code, how we would never have written it the way it is, how those that wrote it were lesser programmers, possibly lesser humans themselves, but the code still remains, staring us in the face and hanging around for longer that we could possibly imagine. We can sort it out, we can improve it, we can make it testable, and we can learn to love our legacy code.
Code smells and Other Malodorous Software OdorsClint Edmonson
A code smell, also known as bad smell in computer programming code, refers to any symptom in the source code of a program that possibly indicates a deeper problem. Join us in this lively session where we will get a whiff of some aromas encountered in the field and how we can neutralize them.
If you create Joomla! extensions you have to do some not complicated but time consuming tasks. It is easy to make a mistake and you have to start over again. I'll show how I have setup my environment and how this is integrated in the development process and package creating process. You can learn how a tool like phing can make you life easier.
What is "Agile"?
Why would someone like to be agile?
What are the 3 pillars for agile software development?
How can you achieve technical excellence in your software teams?
Are developer skills more important than languages, methods or frameworks?
What is practice, Examples, Best practices that developers should follow. Useful tools that every developer should carry and useful GitHub repositories.
Why Isn't Clean Coding Working For My TeamRob Curry
Teams fail to achieve the full benefit of the "clean code" approach when they focus on the code and neglect the Agile process. The full title of Uncle Bob's "Clean Code" book is "Clean Code: A Handbook of Agile Software Craftsmanship". This talk presents an depth look at necessary relationship between Clean Code software craftsmanship and the Agile methodology, identifies common scenarios and situations where teams may fall short of recognizing and respecting that relationship, and provides practical recommendations for achieving a fully integrated process of Agile Software Craftsmanship.
Robert Martin's book "Clean Code: A Handbook of Agile Software Craftsmanship" had a huge positive impact on software development teams that adopted his approach to "Agile Software Craftsmanship". But teams sometimes fail to achieve the full benefit of the "clean code" approach because they focus on the code and neglect the Agile process.
It's easy to do: the book provides such clear, practical advice on how to write code that is easier to maintain, more reliable, and less error prone that developers adopt those techniques to great effect and fail to pursue and adopt the harder, agile process recommendations from the book. This is further complicated by the fact that there is now a Software Craftsmanship Manifesto that is separate from the Agile Manifesto.
So, how does using selected clean code techniques break the Agile process defined in the the book? What is the relationship between the two that Uncle Bob wanted us to understand and adopt in toto? Where do we go wrong? Are there some work environment or business driven scenarios that are more likely to break the relationship?
This presentation addresses those questions and more by an taking an in depth look at necessary relationship between Clean Code software craftsmanship and the Agile methodology, identifies common scenarios and situations where teams may fall short of recognizing and respecting that relationship, and provides practical recommendations for achieving a fully integrated process of Agile Software Craftsmanship.
Code quality directly impacts how easy or hard your job is. The higher the quality, the easier it is for anyone (including you) to quickly jump in and get to work. Where do you start? In this session, Tonya Mork will empower you to simplify your code while dramatically increasing its code quality.
It's all about building <human code>, code that is highly human readable and understandable.
This slide deck is from a session I gave for WPSessions. https://wpsessions.com/sessions/code-quality-makes-jobs-easier/
How to successfully grow a code review cultureNina Zakharenko
As a team grows, code ownership is distributed. Code review becomes increasingly important to support the maintainability of complex codebases. An effective code base is on that can be worked on collaboratively by a team.
In this talk we'll discuss how to introduce a successful code review culture to your development team that will foster the idea of shared ownership. This in turn will result in a happy and healthy code base.
https://webexpo.net/prague2016/talk/how-to-successfully-grow-a-code-review-culture/
Writing code is easy but writing maintainable code is almost impossible. During this talk I will discuss some of the principles of coding that relates to WordPress but goes beyond that.
This presentation is a part of the COP2271C college level course taught at the Florida Polytechnic University located in Lakeland Florida. The purpose of this course is to introduce Freshmen students to both the process of software development and to the Python language.
The course is one semester in length and meets for 2 hours twice a week. The Instructor is Dr. Jim Anderson.
A video of Dr. Anderson using these slides is available on YouTube at:
https://youtu.be/KcFCcCsn6mM
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
Contact with Dawood Bhai Just call on +92322-6382012 and we'll help you. We'll solve all your problems within 12 to 24 hours and with 101% guarantee and with astrology systematic. If you want to take any personal or professional advice then also you can call us on +92322-6382012 , ONLINE LOVE PROBLEM & Other all types of Daily Life Problem's.Then CALL or WHATSAPP us on +92322-6382012 and Get all these problems solutions here by Amil Baba DAWOOD BANGALI
#vashikaranspecialist #astrologer #palmistry #amliyaat #taweez #manpasandshadi #horoscope #spiritual #lovelife #lovespell #marriagespell#aamilbabainpakistan #amilbabainkarachi #powerfullblackmagicspell #kalajadumantarspecialist #realamilbaba #AmilbabainPakistan #astrologerincanada #astrologerindubai #lovespellsmaster #kalajaduspecialist #lovespellsthatwork #aamilbabainlahore#blackmagicformarriage #aamilbaba #kalajadu #kalailam #taweez #wazifaexpert #jadumantar #vashikaranspecialist #astrologer #palmistry #amliyaat #taweez #manpasandshadi #horoscope #spiritual #lovelife #lovespell #marriagespell#aamilbabainpakistan #amilbabainkarachi #powerfullblackmagicspell #kalajadumantarspecialist #realamilbaba #AmilbabainPakistan #astrologerincanada #astrologerindubai #lovespellsmaster #kalajaduspecialist #lovespellsthatwork #aamilbabainlahore #blackmagicforlove #blackmagicformarriage #aamilbaba #kalajadu #kalailam #taweez #wazifaexpert #jadumantar #vashikaranspecialist #astrologer #palmistry #amliyaat #taweez #manpasandshadi #horoscope #spiritual #lovelife #lovespell #marriagespell#aamilbabainpakistan #amilbabainkarachi #powerfullblackmagicspell #kalajadumantarspecialist #realamilbaba #AmilbabainPakistan #astrologerincanada #astrologerindubai #lovespellsmaster #kalajaduspecialist #lovespellsthatwork #aamilbabainlahore #Amilbabainuk #amilbabainspain #amilbabaindubai #Amilbabainnorway #amilbabainkrachi #amilbabainlahore #amilbabaingujranwalan #amilbabainislamabad
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
3. In This Talk
• We will discuss
• How to use Code Complete
• What is high code quality
• How to create high quality code
• Basic concepts of Software Construction
• We will not discuss
• Part VI - Software Craftsmanship
• Detail of any programing language
• Detail of how to deal with code
• Any useful tools
4. Agenda
1. What is High Quality Code?
2. Variables (Good and Bad Examples)
3. Statements (Good and Bad Examples)
4. Self-Documenting code
5. How to create High Quality Code?
6. Have you ever thought…?
• What are others’ code doing?
• Why others’ code looks like so dirty?
• How to improve/create more readable and
High quality code?
• and more…?
7. Have you ever thought…?
• 看不懂別⼈人的 Code 在做什麼?
• 為什麼別⼈人寫的 Code 很凌亂?
• 如何寫出 “品質好”, “可讀性⾼高” 的 Code?
• Or more…?
12. • Complete software-construction reference
• Ready-to-use checklists
• Larger perspective on software development
• Absence of hype
• Concepts applicable to most common language
• Numerous code examples
• Access to other sources of information
THE
REFEERENCE
BOOK
Key Benefits of This Handbook
13. Agenda
1. What is High Quality Code?
2. Variables (Good and Bad Examples)
3. Statements (Good and Bad Examples)
4. Self-Documenting Code
5. How to create High Quality Code?
6. Tips to improve Code Quality
24. Agenda
1. What is High Quality Code?
2. Variables (Good and Bad Examples)
3. Statements (Good and Bad Examples)
4. Self-Documenting Code
5. How to create High Quality Code?
44. Kinds of Names to Avoid
• Avoid misleading names or abbreviations
• e.g. FALSE, TRUE
• Avoid names with similar meanings
• e.g. Input and inputValue;
recordNum and numRecords;
fileNumber and fileIndex
• Avoid variables with different meanings but
similar names
• Bad: clientRecs and clientReps
• Better: clientRecords and clientReports
• Avoid names that sound similar, such as wrap and
rap
Chapter 11
45. Kinds of Names to Avoid
Chapter 11
• Avoid numerals in names
• Avoid file1 and file2, or total1 and total2
• Avoid misspelled words in names
• Avoid misspelling highlight as hilite
• Was it highlite? hilite? hilight? hilit? jai-a-lai-t? Who
knows?
• Avoid words that are commonly misspelled in
English
• e.g. Absense, acummulate, acsend, calender, concieve,
defferred, definate, independance, occassionally
46. Kinds of Names to Avoid
Chapter 11
• Don’t differentiate variable names solely by
capitalization
• Names are unique
• Avoid to use frd for fired,
FRD for final review duty,
and Frd for full revenue disbursal.
• Avoid multiple natural languages
• Avoid “color” or “colour” and “check” or “cheque”
• Avoid the names of standard types, variables, and
routines
47. Kinds of Names to Avoid
Chapter 11
• Don’t use names that are totally unrelated to what
the variables represent
• Bad: margaret and pookie. Who know?
• Better: boyfriend, wife, and favoriteBeer are superior!
• Avoid names containing hard-to-read characters
62. Agenda
1. What is High Quality Code?
2. Variables (Good and Bad Examples)
3. Statements (Good and Bad Examples)
4. Self-Documenting Code
5. How to create High Quality Code?
83. Agenda
1. What is High Quality Code?
2. Variables (Good and Bad Examples)
3. Statements (Good and Bad Examples)
4. Self-Documenting Code
5. How to create High Quality Code?
96. Agenda
1. What is High Quality Code?
2. Variables (Good and Bad Examples)
3. Statements (Good and Bad Examples)
4. Self-Documenting Code
5. How to create High Quality Code?
97. How to create High Quality
Code?
Code Complete 2nd Part II – Creating High-Quality Code
102. Specific Tasks in Construction
• Verifying that the groundwork has been laid so
that construction can proceed successfully
102
103. Specific Tasks in Construction
• Verifying that the groundwork has been laid so
that construction can proceed successfully
• Determining how your code will be tested
103
104. Specific Tasks in Construction
• Verifying that the groundwork has been laid so
that construction can proceed successfully
• Determining how your code will be tested
• Designing and writing classes and routines
104
105. Specific Tasks in Construction
• Verifying that the groundwork has been laid so
that construction can proceed successfully
• Determining how your code will be tested
• Designing and writing classes and routines
• Creating and naming variables and named
constants
105
106. Specific Tasks in Construction
• Verifying that the groundwork has been laid so
that construction can proceed successfully
• Determining how your code will be tested
• Designing and writing classes and routines
• Creating and naming variables and named
constants
• Selecting control structures and organizing
blocks of statements
106
107. Specific Tasks in Construction
• Verifying that the groundwork has been laid so
that construction can proceed successfully
• Determining how your code will be tested
• Designing and writing classes and routines
• Creating and naming variables and named
constants
• Selecting control structures and organizing
blocks of statements
• Unit testing, integration testing, and
debugging your own code
107
108. Specific Tasks in Construction
• Reviewing other team members’ low-level
designs and code and having them review
yours
108
109. Specific Tasks in Construction
• Reviewing other team members’ low-level
designs and code and having them review
yours
• Polishing code by carefully formatting and
commenting it
109
110. Specific Tasks in Construction
• Reviewing other team members’ low-level
designs and code and having them review
yours
• Polishing code by carefully formatting and
commenting it
• Integrating software components that were
created separately
110
111. Specific Tasks in Construction
• Reviewing other team members’ low-level
designs and code and having them review
yours
• Polishing code by carefully formatting and
commenting it
• Integrating software components that were
created separately
• Tuning code to make it faster and use fewer
resources
111
114. Here’s Why
• Construction is a large part of software
development
• Construction is the central activity in software
development
114
115. Here’s Why
• Construction is a large part of software
development
• Construction is the central activity in software
development
• With a focus on construction, the individual
programmer’s productivity can improve
enormously
115
116. Here’s Why
• Construction is a large part of software
development
• Construction is the central activity in software
development
• With a focus on construction, the individual
programmer’s productivity can improve
enormously
• Construction’s product, the source code, is
often the only accurate description of the
software
116
117. Here’s Why
• Construction is a large part of software
development
• Construction is the central activity in software
development
• With a focus on construction, the individual
programmer’s productivity can improve
enormously
• Construction’s product, the source code, is
often the only accurate description of the
software
• Construction is the only activity that’s
guaranteed to be done
117
118. OK! I got it…
Should I need to care about
before the construction?
123. 123
DVCS(Distributed Version Control System )
Made by Linus Torvalds for Linux
He spent about 10 DAYS to commit kernel code using git…
He said that it all depended on getting the basic ideas right…
I'd seen the problems others had, and I wanted to avoid doing.
http://www.linux.com/news/featured-blogs/185-jennifer-cloer/821541-10-years-of-git-an-interview-with-git-creator-linus-torvalds
127. Design is …
• A Wicked Problem
• A Sloppy Process (Even If it Produces a Tidy Result)
• About Tradeoffs and Priorities
• A Heuristic Process
• And more…
Chapter 5
128. Desirable Characteristics of a Design
• Minimal complexity
• Ease of maintenance
• Loose coupling
• Extensibility
• Reusability
• High fan-in
• Low-to-medium fan-out
• Portability
• Leanness
• Stratification
• Standard techniques
Chapter 5
133. Value of Information Hiding
Chapter 5
• Asking “What does this class need to
hide?”
If you can put a Function or Data into the
class’s public interface without
compromising its secrets, do. Otherwise,
don’t.
135. Levels of Design
1.Software system
2.Subsystem/packages
3.Classes within packages
4.Data and routines within
classes
5.Internal routine design
Chapter 5
136. Top-Down and Bottom-Up Design Approaches
Argument for Bottom Up
Argument for Top Down
Chapter 5
137. Top-Down and Bottom-Up Design Approaches
Argument for Bottom UpArgument for Top Down
No Argument, Really
Chapter 5
141. Reasons to Create a Class
• Model real-world objects
• Model abstract objects
• Reduce complexity
• Isolate complexity
• Hide implementation details
• Limit effects of changes
• Hide global data
• Streamline parameter passing
• Make central points of control
• Facilitate reusable code
• Plan for a family of programs
• Package related operations
• Accomplish a specific
refactoring
Chapter 6
160. Good Routine Names
• Describe everything the routine does
• Bad: ComputeReportTotals()
• Silly Names: ComputeReportTotalsAndOpenOutputFile()
• Avoid meaningless, vague, or wishy-washy verbs
• Bad: HandleCalculation(), PerformServices(),OutputUser(),
ProcessInput(), and DealWithOutput()…
• HandleOutput() → FormatAndPrintOutput()
• Make names of routines as long as necessary
Chapter 7
161. Good Routine Names
• Don’t differentiate routine names solely by number
• Bad: Part1, Part2,
OutputUser0, OutputUser1, and OutputUser2
• To name a function, use a description of the return value
• e.g. cos(), customerId.Next(), printer.IsReady(), and pen.CurrentColor()
• To name a procedure, use a strong verb followed by an object
• e.g. PrintDocument(), CalcMonthlyRevenues(), CheckOrderlnfo(), and
RepaginateDocument()
Chapter 7
162. Good Routine Names
• Establish conventions for common operations
• e.g. employee.id.Get(), dependent.GetId(), supervisor(), candidate.id()
• Use opposites precisely
Chapter 7
163. How Long Can a Routine Be?
100
200
Less then 200 lines is better.
Chapter 7
166. Limit the number of a routine’s
parameters to about
Seven
Chapter 7
7
167. What is Pseudocode?
Chapter 5
Pseudocode is an informal high-level
description of the operating principle of a
computer program or other algorithm.
171. Constructing Routines by Using the PPP
Chapter 5
Design the routine.
Code the routine.
Check the code.
Clean up loose ends.
Repeat as needed.
1
2
3
4
5
176. Chapter 5
The code for each comment has been filled in from here down.
3
177. Chapter 15
Example of a Complete Routines Overview
Routine Header
Routine Interface
The code for each
comment has been
filled in from here
down.
The last paragraph of
Routine