mgechev

<link rel="shortcut icon" width=32px>
<canvas style="display: none" id="loader" width="16" height="16"></canvas>

<script>
class Loader {
  constructor(link, canvas) {
    this.link = link;
    this.canvas = canvas;
    this.context = canvas.getContext('2d');
    this.context.lineWidth = 2;

dsyme

Quick notes on a rant

Some examples related to my tweet rant https://twitter.com/dsymetweets/status/1294276915260522496

1. Implicitly discarding information is so 20th Century

In project programming this hit me this week with a bug:

kovetskiy

#!/bin/bash
###
### my-script — does one thing well
###
### Usage:
###   my-script <input> <output>
###
### Options:
###   <input>   Input file to read.
###   <output>  Output file to write. Use '-' for stdout.

armanozak

// /User/keybindings.json

[
  {
    "key": "shift+alt+t",
    "command": "editor.action.insertSnippet",
    "when": "resourceLangId == typescript && editorTextFocus && !editorReadonly",
    "args": {
      "langId": "typescript",
      "name": "Disable TSLint"

erincandescent

Foreward

This document was originally written several years ago. At the time I was working as an execution core verification engineer at Arm. The following points are coloured heavily by working in and around the execution cores of various processors. Apply a pinch of salt; points contain varying degrees of opinion.

It is still my opinion that RISC-V could be much better designed; though I will also say that if I was building a 32 or 64-bit CPU today I'd likely implement the architecture to benefit from the existing tooling.

Mostly based upon the RISC-V ISA spec v2.0. Some updates have been made for v2.2

Original Foreword: Some Opinion

The RISC-V ISA has pursued minimalism to a fault. There is a large emphasis on minimizing instruction count, normalizing encoding, etc. This pursuit of minimalism has resulted in false orthogonalities (such as reusing the same instruction for branches, calls and returns) and a requirement for superfluous instructions which impacts code density both in terms of size and

myshov

console.log(1);
(_ => console.log(2))();
eval('console.log(3);');
console.log.call(null, 4);
console.log.apply(null, [5]);
new Function('console.log(6)')();
Reflect.apply(console.log, null, [7])
Reflect.construct(function(){console.log(8)}, []);
Function.prototype.apply.call(console.log, null, [9]);
Function.prototype.call.call(console.log, null, 10);

spuder

Stock Diatone GT2 200 (V2) Settings

D-Link F3 V2 Flight Controller + PDB

Warning

Some boards come with Betaflight 3.0.x, others come with 3.1.x

craigtp

public static class NumericHelpers
    {
        // Float point maths is whack.  We can't check for absolute equality as floating point numbers are imprecise
        // and are subject to rounding issues (See: http://docs.oracle.com/cd/E19957-01/806-3568/ncg_goldberg.html)
        // Therefore, we can't check for absolute equality, but instead we have to need to check for values being
        // "nearly" equal, which allows a small margin of error (i.e. something known as the "Epsilon" value for
        // the given data type for this CPU that this code is running on).
        public static bool NearlyEqual(double a, double b, double epsilon)
        {
            var absA = Math.Abs(a);

SamSaffron

Tips for optimizing performance of the Discourse gigantic test suite

Change memory allocator

default:            9:37
tcmalloc:           8:32
lockless:           8:19
jemalloc 3.6.0: 7:45

rondy

FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.

---

Effective Engineer - Notes

• By Edmond Lau
• Highly Recommended 👍
• http://www.theeffectiveengineer.com/

What's an Effective Engineer?