Design patterns and where to find them
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Design pattern, unveil the mystery and find the fantastic... Contact me at: koh2203@gmail.com https://facebook.com/kiennx
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There are two main methods for translating high-level programming languages into machine code that computers can understand: interpreters which translate code line-by-line and are better for debugging, and compilers which translate the full program at once for faster execution but make debugging harder through error files instead of line-by-line feedback. High-level languages are written to be easier for humans to understand but must be translated before a computer can execute the code either through an interpreter or compiler.
Engineering dictionary
This document presents an engineering dictionary project that was created to provide English to Bangla translations of engineering terms. It aims to make engineering terminology easier for general people to understand by offering a simpler structure than existing dictionaries. The proposed dictionary structure would display the Bangla meaning and description along with the English term. It was developed using tools like HTML, PHP, CSS, MySQL database, and Apache web server. The presentation provides details on the objective, existing dictionary structure, proposed new structure, use case diagram, data flow diagram, state diagram, and architecture diagram. Future plans include making the software faster and developing a new concept.
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Translators
There are two main methods for translating high-level programming languages into machine code that computers can understand: interpreters which translate code line-by-line and are better for debugging, and compilers which translate the full program at once for faster execution but make debugging harder through error files instead of line-by-line feedback. High-level languages are written to be easier for humans to understand but must be translated before a computer can execute the code either through an interpreter or compiler.
Engineering dictionary
This document presents an engineering dictionary project that was created to provide English to Bangla translations of engineering terms. It aims to make engineering terminology easier for general people to understand by offering a simpler structure than existing dictionaries. The proposed dictionary structure would display the Bangla meaning and description along with the English term. It was developed using tools like HTML, PHP, CSS, MySQL database, and Apache web server. The presentation provides details on the objective, existing dictionary structure, proposed new structure, use case diagram, data flow diagram, state diagram, and architecture diagram. Future plans include making the software faster and developing a new concept.
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Electron allows developers to build desktop applications with web technologies like HTML, CSS, and JavaScript. It uses Chromium and Node.js to package apps so they can run natively on desktop and gain capabilities like offline use, while reusing existing frontend skills. Some benefits are auto-updates, debugging tools and native UI integration, though apps can be large and occasional performance issues occur. Developers can leverage existing JavaScript skills and libraries to build the app interface and backend, communicating between processes using Electron's IPC and remote APIs.
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YAGNI = You Ain’t Gonna Need It
Emerged as one of the key principles of Extreme Programming
and says that you should do the simplest thing that could Possibly work!
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AI Fusion Buddy Review: Brand New, Groundbreaking Gemini-Powered AI App
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See My Other Reviews Article:
(1) AI Genie Review: https://sumonreview.com/ai-genie-review
(2) SocioWave Review: https://sumonreview.com/sociowave-review
(3) AI Partner & Profit Review: https://sumonreview.com/ai-partner-profit-review
(4) AI Ebook Suite Review: https://sumonreview.com/ai-ebook-suite-review
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LORRAINE ANDREI_LEQUIGAN_HOW TO USE ZOOM
Zoom is a comprehensive platform designed to connect individuals and teams efficiently. With its user-friendly interface and powerful features, Zoom has become a go-to solution for virtual communication and collaboration. It offers a range of tools, including virtual meetings, team chat, VoIP phone systems, online whiteboards, and AI companions, to streamline workflows and enhance productivity.
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Design patterns and where to find them
- 1. DESIGN PATTERNS And where to find them
- 2. ABOUT ME Nguyễn Xuân Kiên Techlead at Shippo.vn Experienced with ASP.NET JAVA PHP Javascript
- 3. DESIGN PATTERNS A reusable solution to a common problem A template or description for how to solve a problem A practice that has been tried A Fantastic beast, not mystical
- 4. A BOOK BY “GANG OF FOUR” Only proven design patterns Applicable for Object-Oriented Software
- 5. THE PROBLEM A simple CRUD problem We have many transactions or queries Same code at many places
- 7. REFACTORED
- 9. SINGLETON Ensure there is only one instance in the whole application Has a global access point, allow easy access May hide the constructor
- 10. THE PROBLEM There are many Brand Name SMS Service Providers We need at least 2 usable service (1 for backup) Each service has different interface The switching should be as quick as possible
- 11. THE SIMPLE WAY
- 12. REFACTORED
- 13. SAME INTERFACE, DIFFERENT API
- 14. ADAPTER Provide new interface for existing classes Make different classes use same interface without modification Switchable API
- 15. SAME AS BEFORE, WITH ADAPTERS
- 16. REFACTORED
- 17. FACTORY METHOD Create objects without exposing its constructor Create objects of the same interfaces, with subclasses define which class to create instance Flexible object creating
- 19. 4 TYPES OF PATTERN Creational Structure Behavioral Concurrency
- 20. CONCLUSION It’s a template, or a description, not a module or library It can be extended, modified to suit your project and your problem Many patterns can be sew together It’s a matter of architecture
- 21. TIME FOR Q & A
Editor's Notes
- Các bạn đã đọc Harry Potter chưa, nếu đã đọc thì đã biết đến cuốn Fantastic Beast and where to find them Đã được dựng thành phim năm 2016 Sách liệt kê danh sách các sinh vật “huyền bí”
- Design pattern là gì? Nó chỉ là một giải pháp cho một số vấn đề lặp đi lặp lại. Nó không đơn giản là để cho code đẹp hơn hay dễ mở rộng hơn. Cũng không phải là điều bí ẩn hay cao siêu mà là những lời giải đã được thực hiện trước đó, và là “kỳ diệu” chứ không phải “huyền bí” Chúng ta sẽ tìm hiểu một số Design Pattern trong quyển Design Patterns: Elements of Reusable Object-Oriented Software của bộ tứ Siêu Đẳng Tôi sử dụng ngôn ngữ PHP để thực hiện demo
- Trong cùng một session có thể có 2 đoạn thao tác với database như sau Open many connection for one request
- Don’t repeat yourself Keep only one connection
- Final refactor
- Gửi tin nhắn báo thành công
- Đây chỉ là một tin nhắn Chỉ với 2 sms provider Không quản lý được các thông tin khác như giới hạn số tin nhắn gửi đi, tần suất gửi trên phút,…
- Thực ra có thể tạo ra một interface chung cho các lớp khác nhau, thậm chí hoàn toàn khác
- Tạo ra các instance Kiến trúc giữa các lớp, thực thể Cách thức giao tiếp giữa các thực thể Quản lý, sử dụng multi-threading