immer
Visual Studio Code
immer | Visual Studio Code | |
---|---|---|
25 | 2,845 | |
2,425 | 158,365 | |
- | 0.7% | |
6.2 | 10.0 | |
7 days ago | 6 days ago | |
C++ | TypeScript | |
Boost Software License 1.0 | MIT License |
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immer
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Text Editor Data Structures: Rethinking Undo
I've been working on an editor (not text) in C++ and pretty early got into undo/redo. I went down the route of doIt/undoIt for commands but that quickly got old. There was both the extra work needed to implement undo separately for every operation, but also the nagging feeling that the undo operation for some operation wasn't implemented correctly.
In the end, I switched to representing the entire document state using persistent data structures (using the immer library). This vastly simplified things and implementing undo/redo becomes absolutely trivial when using persistent data structures. It's probably not something that is suitable for all domains, but worth checking out.
https://github.com/arximboldi/immer
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Show HN: A hash array-mapped trie implementation in C
How does this compare to https://github.com/arximboldi/immer (other than the C/C++ difference)?
Also, it's my understanding that, in practice, persistent data structures require a garbage collector in order to handle deallocation when used in a general-purpose way. How does your implementation handle that?
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Text Editor Data Structures
You might be interested in ewig and immer by Juan Pedro Bolivar Puente:
https://github.com/arximboldi/ewig
https://github.com/arximboldi/immer
See the author instantly opening a ~1GB text file with async loading, paging through, copying/pasting, and undoing/redoing in their prototype “ewig” text editor about 27 minutes into their talk here:
https://m.youtube.com/watch?v=sPhpelUfu8Q
It’s backed by a “vector of vectors” data structure called a relaxed radix balanced tree:
https://infoscience.epfl.ch/record/169879/files/RMTrees.pdf
That original paper has seen lots of attention and attempts at performance improvements, such as:
https://hypirion.com/musings/thesis
https://github.com/hyPiRion/c-rrb
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value semantics and spans/views
You’re absolutely right, however people have been putting in the “extra efforts” required for efficiency. Check out immer if you’re interested.
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How to synchronize access to application data in multithreaded asio?
The C++ immer library: https://github.com/arximboldi/immer
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Purely Functional Data Structure by Chris Okasaki [pdf]
For C++ check this one out - https://github.com/arximboldi/immer
- Persistent and immutable data structures written in C++14
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Introducing B++ Trees, a C++ B+ Tree library
Yeah I agree that I should link that wikipedia page in the docs, I'll do that as soon as I get a chance. immer (https://github.com/arximboldi/immer) also links that page in its docs, for the exact same reason I'm sure. Interestingly, there is a lot of overlap between persistent data structures in the functional programming sense and persistent data structures in the persisted-to-disk sense because persistent data structures in the FP sense are one of the best ways to guarantee atomic updates and safe failure recovery in a persisted-to-disk system! Btrfs and ZFS, as well as many databases, are at their core basically just copy-on-write B+ trees.
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What are some architectural patterns for creating a game editor.
I’ve never tried it, but I love the idea of implementing editor scene state using immutable data structures like https://github.com/arximboldi/immer With that, every edit would append a new node to a list of scene states. Undo/redo becomes iterating your view of the scene up and down through that list. Can’t screw up an undo function if there’s never any work to do :P
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TypeScript Without Side Effects
I have! I think it's related to the C++ immer library which I used several years ago in Vortex. It's kinda like the previous generation of ValueScript. 🍻
Visual Studio Code
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Create a simple Server using Express.js.
Download any code editor e.g. VS code. Visual Studio code which is a code editor with support for development operations like debugging, task running, and version control. Go to https://code.visualstudio.com
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How to Add Firebase Authentication To Your NodeJS App
A code editor (VS Code is my go-to IDE), but feel free to use any code editor you're comfortable with.
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Create a Chat App With Node.js
First, grab your favorite command-line tool, Terminal or Warp, and a code editor, preferably VS Code and let’s begin.
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Asynchronous Programming in C#
C# is very good as a language, have developed in it for 5+ years. The problem is the gap between what MSFT promises to management and actually delivers to developers. You really really need to fully read the fine print, think of the omissions in documentation and implement a proof-of-concept that almost implements the full solution to find out the hidden gotchas.
For example, even probably their best product VS Code only got reasonable multiple screens support last year: https://github.com/microsoft/vscode/issues/10121#issuecommen...
And then, on the other end of the spectrum, you have Teams.
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8 Essential VS Code Extensions [2024]
Hey fellow amazing developers, we got you Essential VS Code Extensions for 2024 (these are especially important for web developers) recommended by our developers at evotik, we wont talk about ESlint nor Prettier which all of you already know.
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scrape-yahoo-finance
Visual Studio Code (VS Code): Developed by Microsoft, VS Code is a lightweight yet powerful IDE with extensive support for Python development through extensions. It offers features like IntelliSense, debugging, and built-in Git integration.
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XDebug with WP-Setup
In VSCode for example this can be easily done by adding the following .vscode/launch.json file:
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I can't stand using VSCode so I wrote my own (it wasn't easy)
I had a near-identical experience. I looked into switching in 2019 and ran into this 2016 bug which was a showstopper for me. Fixed it myself, grand total 4 line diff. https://github.com/microsoft/vscode/issues/10643
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Employee Management System using Python.
When working in Visual Studio Code (VS Code), always create a new Python file for your project.
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A deep dive into progressive web apps (PWA)
Code Editor: Choose a code editor like Visual Studio Code that offers good support for web technologies and extensions for PWA development.
What are some alternatives?
babashka - Native, fast starting Clojure interpreter for scripting
thonny - Python IDE for beginners
clj-kondo - Static analyzer and linter for Clojure code that sparks joy
reactide - Reactide is the first dedicated IDE for React web application development.
graalvm-clojure - This project contains a set of "hello world" projects to verify which Clojure libraries do actually compile and produce native images under GraalVM.
Spyder - Official repository for Spyder - The Scientific Python Development Environment
ewig - The eternal text editor — Didactic Ersatz Emacs to show immutable data-structures and the single-atom architecture
doom-emacs - An Emacs framework for the stubborn martian hacker [Moved to: https://github.com/doomemacs/doomemacs]
deprecated-coalton-prototype - Coalton is (supposed to be) a dialect of ML embedded in Common Lisp.
KDevelop - Cross-platform IDE for C, C++, Python, QML/JavaScript and PHP
awesome-modern-cpp - A collection of resources on modern C++
vscodium - binary releases of VS Code without MS branding/telemetry/licensing