promises-spec
proposal-symbol-thenable
| promises-spec | proposal-symbol-thenable | |
|---|---|---|
| 22 | 1 | |
| 1,831 | 18 | |
| 0.2% | - | |
| 0.0 | 10.0 | |
| 9 months ago | almost 6 years ago | |
| HTML | ||
| Creative Commons Zero v1.0 Universal | - |
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promises-spec
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Implement Promises/A+ from scratch
Today, I tried implementing Promises/A+ from scratch to test my coding skill. In the process, I’ve crafted this guide to share my insights and experiences with those who share a similar interest. Without further ado, let’s dive in.
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Using XPath in 2023
That made me chuckle.
For those not familiar with the promise design controversy:
http://brianmckenna.org/blog/category_theory_promisesaplus
https://github.com/promises-aplus/constructor-spec/issues/24
https://github.com/promises-aplus/promises-spec/issues/94
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Why is JavaScript so hated?
If you really want to go down the rabbit hole on this one, start here
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What the imperative shell of an Functional Core/Imperative Shell language looks like
Advantage 1, nesting, is the most important here, and it's often the most-overlooked advantage. Overlooking nesting is how Promises in Javascript got to be fundamentally broken.
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[AskJS] Is JavaScript missing some built-in methods?
Have you read the infamous GitHub thread where people tried to fix this before it got finalized? It's quite a trip
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This typo lasted several pomodoro sessions.
1.) JS implementation of Promise is not a monad. See this StackOverflow answer or this GitHub discussion for more details
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How to implement Promise in a FAANG interview
In this article, we will go over how to implement a basic version of a promise during a FAANG interview. The standard for promise implementation is called A+, but it includes a huge amount of details, making it almost impossible to implement all of them during a one-hour coding interview. Therefore, we will focus on implementing a basic variation that should be enough to show the interviewer your solving skills.
- what object
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Oopsy Poopsy ahahaha *sharts uncontrollably*
Hey, at least you weren't these guys: https://github.com/promises-aplus/promises-spec/issues/94
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Haskell is the greatest programming language of all time ... the rational adult in a room full of children ... When I program in Haskell, I am in utopia. I am in a different world than 99.9% of what I see posted on Reddit.
Total carnage
proposal-symbol-thenable
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Why Promise's resolve function doesn't check whether given result value is actually a Promise object or not?
There is a proposal for Symbol.thenable that would allow you to prevent objects with a then method from being seen as a thenable (promise), but it hasn't gained much traction and is still at stage 0 (from 4 years ago).
What are some alternatives?
q - A promise library for JavaScript
zx - A tool for writing better scripts
proposal-set-methods - Proposal for new Set methods in JS
cats-effect - The pure asynchronous runtime for Scala
purescript - A strongly-typed language that compiles to JavaScript
fantasy-land - Specification for interoperability of common algebraic structures in JavaScript
fp-ts - Functional programming in TypeScript
algo.monads - Macros for defining monads, and definition of the most common monads
fontoxpath - A minimalistic XPath 3.1 implementation in pure JavaScript
camaro - camaro is an utility to transform XML to JSON, using Node.js binding to native XML parser pugixml, one of the fastest XML parser around.
taoup - The Tao of Unix Programming (Ruby-powered ANSI colored fortunes)