VictorTaelin

Implementing complex numbers and FFT with just datatypes (no floats)

In this article, I'll explain why implementing numbers with just algebraic datatypes is desirable. I'll then talk about common implementations of FFT (Fast Fourier Transform) and why they hide inherent inefficiencies. I'll then show how to implement integers and complex numbers with just algebraic datatypes, in a way that is extremely simple and elegant. I'll conclude by deriving a pure functional implementation of complex FFT with just datatypes, no floats.

davidfowl

Minimal APIs at a glance

This document now exists on the official ASP.NET core docs page.

• Application
  • WebApplication
  • WebApplicationBuilder
• Request Handling
  • Routing
  • Parameter Binding

brunolemos

(() => {
  let count = 0;

  function getAllButtons() {
    return document.querySelectorAll('button.is-following') || [];
  }

  async function unfollowAll() {
    const buttons = getAllButtons();

this-fifo

this-fifo

simpsoka

Do I want to die on this hill?

• Pass: This is morally good and if not handled has long term consequences
• Fail: This if self serving

Am I including everyone?

• Pass: My ego is not driving this conversation
• Fail: The people in this conversation will only tell me I'm right and not push back

ljharb

Array Iteration

https://gist.github.com/ljharb/58faf1cfcb4e6808f74aae4ef7944cff

While attempting to explain JavaScript's reduce method on arrays, conceptually, I came up with the following - hopefully it's helpful; happy to tweak it if anyone has suggestions.

Intro

JavaScript Arrays have lots of built in methods on their prototype. Some of them mutate - ie, they change the underlying array in-place. Luckily, most of them do not - they instead return an entirely distinct array. Since arrays are conceptually a contiguous list of items, it helps code clarity and maintainability a lot to be able to operate on them in a "functional" way. (I'll also insist on referring to an array as a "list" - although in some languages, List is a native data type, in JS and this post, I'm referring to the concept. Everywhere I use the word "list" you can assume I'm talking about a JS Array) This means, to perform a single operation on the list as a whole ("atomically"), and to return a new list - thus making it mu

simpsoka

Product managers

• Seek out failure, it teaches us to think like a scientist. If you start with a hypothesis, then try to prove yourself wrong, you’re bound to make much better decisions. You have to be willing to fail, and that in itself is going to help you build confidence and be more convicted about what your strategy is in the end.
• There are hundreds of methods for building products and running teams. As a quality PM, it's important to have an open mind about all of it, but finding your own process and philosophy can be grounding. It helps you find your pillars so that you don't smash into things while you're building. Remember, however, that you can always find a budget for remodeling. 😉
• The beauty of a good process is when it just becomes how you do your work. When you forget you're following a process at all is when you know the process is working for you, your team, your company, and your customers.
• The advice I give new Product Managers or PMs coming onto a team for the first

lolzballs

import java.io.FileDescriptor;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintStream;

public class HelloWorld{
	private static HelloWorld instance;
    public static void main(String[] args){
        instantiateHelloWorldMainClassAndRun();

CoolOppo

ImageMagick Video to GIF Optimization Summary

A software developer who uses IM to create Movie GIFs, Benoit Rouleau, in discussion with me, gave me a AVI video of a plane flying over, to help us mutually explore IM video conversion techniques.

However while the AVI itself is quite small, the uncompressed video is a