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This document introduces BlazeHtml, a library for generating HTML in Haskell. It discusses how HTML can be represented as a tree structure, making it trivial to generate with Haskell. It outlines the initial design of the BlazeHtml library, which defines an Html data type to represent HTML elements and text. The document also briefly mentions some optimizations made, such as replacing String with Text, and benchmarking results. It concludes by noting there is still work to be done and provides a link to the GitHub repository.
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The program reads data from two files, itemsList-0x.txt and .docx
The program reads data from two files,
itemsList-0x.txt
and
inventoryList-0x.txt
. File extensions on Linux may be arbitrary–i.e., these files could have been named with
.dat
as the extensions.
The first file,
itemsList-0x.txt
, lists all possible items. Each line represents one item in the form
id name
.
Example 1: Sample itemsList-0x.txt
0 Air 1 HP Potion 2 MP Potion 5 Iron Ore 3 Bow Tie 4 Dirt 6 Diamond Ore 7 Iron Ingot 8 Diamond 9 Diamond Block
The second file,
inventoryList-0x.txt
, lists each individual inventory–or storage chest–followed by a list of items.
Example 2: Sample inventoryList-0x.txt
# 5
- 1 10 - 2 5 - 3 2 # 6
- 4 3 - 5 27 - 6 44 - 7 55 - 8 1 - 9 4 - 4 3 # 2
- 2 5 - 9 4 - 8 1 - 5 2 - 10 5
Each line preceded by
#
denotes the start of a new inventory. Each line preceded by
-
denotes an item. The program creates a new inventory each time a
#
is encountered.
When a
-
is encountered, a stack of items, ItemStack, is created. The
ItemStack
is placed in the
Inventory
based on the following rules:
If the Inventory is empty, store the ItemStack, and
return true
.
If the Inventory is not empty, examine the Inventory.
If a matching ItemStack is found, merge the two ItemStacks and
return true
.
If no matching ItemStack is found, store the new ItemStack and
return true
.
If the Inventory is full,
return false
.
Through the magic of abstraction, this is not one function, but four (4) functions in total. Yes, it does seem unnecessary at first. However, each function does one thing and only one thing. This is an exercise in understanding the thought process behind abstraction, interfaces, and the
S
/
O
in
S.O.L.I.D
(with some C++ code) in a multi-ADT program.
Most of your time will be spent on understanding the abstractions (and interfaces) as opposed to spamming cobblestone blocks… I mean C++ code.
3.2 Output
The output consists of three reports written to standard output, one after the other.
A report listing items that were stored or discarded.
A report listing all valid items.
Finally, a detailed report is printed. listing data for each inventory:
Maximum Capacity–i.e., total slots.
Utilized Capacity–i.e., occupied slots
Listing of all items.
If the program is run with the provided input files, the following output should be generated…
Example 3: Sample Output
Processing Log: Stored (10) HP Potion Stored ( 5) MP Potion Stored ( 2) Bow Tie Stored ( 3) Dirt Stored (27) Iron Ore Stored (44) Diamond Ore Stored (55) Iron Ingot Stored ( 1) Diamond Stored ( 4) Diamond Block Stored ( 3) Dirt Stored ( 5) MP Potion Stored ( 4) Diamond Block Discarded ( 1) Diamond Discarded ( 2) Iron Ore Item List: 0 Air 1 HP Potion 2 MP Potion 3 Bow Tie 4 Dirt 5 Iron Ore 6 Diamond Ore 7 Iron Ingot 8 Diamond 9 Diamond Block Storage Summary: -Used 3 of 5 slots (10) HP Potion ( 5) MP Potion ( 2) Bow Tie -Used 6 of 6 slots ( 6) Dirt.
Smalltalk in a .NET World
John Brant:
Smalltalk in a .NET World.
How to write a Smalltalk compiler without writing a VM
(ESUG 2003, Bled)
Killing the Angle Bracket
Sooner or later we all have to work with HTML, despite its verbosity. Those of us who claim to love HTML may just be victims of Stockholm Syndrome, both praising yet secretly loathing it.
Basho designer John Newman is making the trek from the swamps of Florida to show us the way. In the modern world of markup preprocessors, these alternative syntaxes allow you to write simpler, cleaner, more concise code in a shorter amount of time. Certain techniques can even allow your team members who may be less-tech-savvy to contribute content directly without forcing you to wire up a WYSIWYG style CMS.
This talk explores great alternatives to plain HTML and CSS, and covers how Basho put these tools together to facilitate a painless, team-oriented approach to building sites and web apps.
Ejb3 Struts Tutorial En
This document provides instructions for setting up an EJB 3 project that integrates with the Struts framework. It explains how to create EJB and web projects using MyEclipse. It also describes adding required libraries, creating entity beans for Book and Customer objects, and adding JPA annotations to define primary keys and entity mappings.
Ejb3 Struts Tutorial En
This document provides instructions for setting up an EJB 3 project that integrates with the Struts web framework. It describes creating entity beans for Book and Customer objects and defining the relationship between them. It also covers implementing a stateless session bean with local and remote interfaces to perform basic CRUD operations using the entity manager. The tutorial uses PostgreSQL as the database and provides code samples for the entity beans, session bean, and persistence configuration file.
Intro to mobile web application development
Learn all the basics of web app development including bootstrap, handlebars templates, jquery and angularjs, as well as using hybrid app deployment on a phone.
PPT
The document provides an overview of developing a 3-tier web application using MySQL, JavaServer Pages (JSP), and Apache Tomcat. It discusses the architecture of a 3-tier system with separate data, application, and presentation tiers. It also provides information on using MySQL for the database tier, JSP and servlets for the application tier, and HTML/JSP for the presentation tier. The document gives examples of using MySQL commands and JSP tags and objects.
Practical catalyst
Catalyst is a web framework for Perl that allows developers to build dynamic web applications in a modular, reusable way. It utilizes common Perl techniques like Moose, DBIx::Class and Template Toolkit to handle tasks like object modeling, database access and view rendering. Catalyst applications can be built in a model-view-controller style to separate application logic, data access and presentation layers. This framework provides a standard way to write reusable code and build web UIs for tasks like system administration and automation.
Ant tutorial
This document provides an overview of the Apache Ant build tool. It describes that Ant is a Java-based build tool that uses XML files to automate tasks like compiling code, packaging binaries, deploying code, and more. It allows developers to spend less time on manual tasks and regain 3 hours per day on average. The document then covers installing Ant, creating a basic build file with targets, using properties to define variables, storing properties in external files, and the different data types Ant provides like filesets.
Java ant tutorial
This document provides an overview of the Apache Ant build tool. It describes what Ant is used for, how to install and configure it, the basic structure of Ant build files written in XML, and how to define properties, targets, tasks and other elements. It also provides an example of an Ant build file that would compile Java source code and place the class files in the proper directory for a sample web application project structure.
ABRIDGED VERSION - Joys & frustrations of putting 34,000 lines of Haskell in...
Slides for our talk given at Functional Conf 2017. Shared our experience of putting 34,000 lines of Haskell code in production at Vacation Labs. Please ping me on https://twitter.com/saurabhnanda if you'd like help with deploying Haskell in an industrial setting.
Echtzeitapplikationen mit Elixir und GraphQL
Wir stellen unsere Erfahrung vor, die wir in 15 Monaten Einsatz von Elixir und GraphQL in Produktion nach Relaunch eines großen
Jobanzeigenportals gesammelt haben.
Elixir bietet uns die Möglichkeit, ein hoch verfügbares Backend mit extrem geringen Antwortzeiten zu entwickeln. Dieses wird über eine GraphQL Schnittstelle von mehreren Frontends genutzt.
Elixir ist eine junge, funktionale Programmiersprache, die 2011 vorgestellt wurde. Jedoch setzt sie auf dem Erlang Ökosystem auf, welches in über 32 Jahren eine extrem stabile Basis zur Entwicklung von Anwendungen geworden ist.
Ein häufiger Anwendungsfall von Elixir sind Echtzeitapplikationen, zum Beispiel Chatanwendungen, Bots und IoT-Anwendungen. In Verbindung mit GraphQL Subscriptions ist es einfach möglich, Clients über Statusaktualisierungen vom Server zu Informieren. Wir zeigen, wofür man Elixir einsetzen kann, wie GraphQL einen leichten Einstieg in Datenexploration anbietet und wieso beide zusammen eine Überlegung wert sind.
WEB DEVELOPMENT
This document provides an overview of web development technologies including HTML, CSS, Bootstrap, SQL, and PHP. It begins with introductions to web development, HTML, and CSS. It then covers Bootstrap frameworks, SQL for databases, and PHP for server-side scripting. Examples of code are provided for each. The document concludes with a thank you slide.
Exploring SharePoint with F#
This document summarizes a presentation about exploring SharePoint with the F# programming language. It discusses the history and characteristics of functional programming and F#, including that F# is a functional-first language developed by Microsoft Research. It also covers how to use the F# Client Object Model to connect to and query SharePoint, including loading references, creating a client context, and querying sites, lists, and list items. The presentation demonstrates iterating through lists and items and retrieving properties.
HTML literals, the JSX of the platform
- Lit-html is a library that allows HTML templates to be rendered efficiently using JavaScript template literals. It parses template literals and creates a template object with "parts" that can be updated.
- Rendering only updates the dynamic parts of the template, avoiding re-rendering the entire template and reducing work. Templates are treated as values that can be manipulated.
- Google is working on lit-html to standardize its parsing of templates and "template parts" concept, with the goal of it potentially being adopted directly into the web platform. Lit-html aims to have minimal limitations and a standardized public API for extensions.
A Life of breakpoint
This document provides an overview of LLDB, an open-source debugger developed by Apple. It discusses LLDB's architecture, how it uses Clang and is scriptable/pluggable. It also summarizes how LLDB sets breakpoints, evaluates expressions by running on the target process, and prints structured variables using Clang type representations. Testing for LLDB consists of around 20 test cases written in Python. There is opportunity for external contributors to help with areas like testing and improving the CLI.
Internet Programming
HTML is used to structure and format web pages. It uses tags to define headings, paragraphs, lists, links and other items. The document discusses various HTML tags like <p>, <b>, <i>, <img>, <a> and <table> that are used to define text formatting, images, links, and tables. It also describes attributes that can be added to tags to further control formatting and layout.
TorqueBox: The beauty of Ruby with the power of JBoss. Presented at Devnexus...
- Bob McWhirter is the project lead of TorqueBox and a JBoss Fellow.
- TorqueBox allows Ruby web applications to run on the JBoss Application Server using JRuby.
- It provides tight integration with JBoss and allows Ruby applications to take advantage of features like messaging, jobs, and services that are traditionally Java-based.
Bootcamp - Web Development Session 2
This document provides an introduction to HTML, CSS, and JavaScript for website development. It defines each technology and describes common elements and syntax. It also explains how browsers request and load website resources, and introduces developer tools for inspecting and debugging code. The key points covered are: definitions of HTML, CSS, JavaScript and common tags/elements in each; how browsers get IP addresses and request files from servers; features of developer tools like Elements, Console, and Network panels.
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The program reads data from two files, itemsList-0x.txt and .docx
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Dutch hug
- 1. BlazeHtml Design of a blazingly fast html combinator library
- 2. Hello! My name is jasper Studying BSc CS @ UGent I like to make things @jaspervdj jaspervdj.be
- 3. Introduction A web app usually has 3 important layers: web application server data storage layer html generation layer
- 5. Trees in Haskell > data Tree > = Node Tree Tree > | Empty
- 6. Html is a tree This makes writing an Html generation library trivial in Haskell.
- 7. Le't write a library! > type Attribute = > (String, String) > type Tag = String
- 8. Le't write a library! > data Html > = Node Tag [Attribute] > Html > | Leaf Tag [Attribute] > | Concat [Html] > | Text String > deriving (Show)
- 10. Hackage quick look html xhtml xhtmlcombinators moe xhtml1
- 13. s/String/Data.Text/g A first good step
- 14. s/String/Data.Text/g A first good step text1 `append` text2
- 15. s/String/Data.Text/g A first good step text1 `append` text2 BAD BAD BAD
- 16. No inspiration? Just shamelessly steal ideas from other Haskell projects.
- 18. Builder Monoid
- 19. 3layer approach
- 22. Builder Fork fromText :: Text -> Builder fromEscapedText :: Text -> Builder fromShow :: Show a => a -> Builder fromRawAscii7Char :: Char -> Builder
- 23. Builder Fork Additional function: > fromUnsafeWrite > :: Int > -> (Ptr Word8 > -> IO ()) > -> Builder
- 24. Benchmarks
- 25. Benchmarks
- 26. Benchmarks
- 27. Benchmarks
- 28. The future Lots still to do until we have a stable, fast, awesome version. For the curious: github.com/jaspervdj/BlazeHtml
- 29. Questions?