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@staltz
staltz / introrx.md
Last active Aug 25, 2019
The introduction to Reactive Programming you've been missing
View introrx.md
@vasanthk
vasanthk / System Design.md
Last active Aug 25, 2019
System Design Cheatsheet
View System Design.md

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

  1. Clarify and agree on the scope of the system
  • User cases (description of sequences of events that, taken together, lead to a system doing something useful)
    • Who is going to use it?
    • How are they going to use it?
View folder-structure.md

Folder Structure

Motivations

  • Clear feature ownership
  • Module usage predictibility (refactoring, maintainence, you know what's shared, what's not, prevents accidental regressions, avoids huge directories of not-actually-reusable modules, etc)
@mikaelbr
mikaelbr / destructuring.js
Last active Aug 25, 2019
Complete collection of JavaScript destructuring. Runnable demos and slides about the same topic: http://git.mikaelb.net/presentations/bartjs/destructuring
View destructuring.js
// === Arrays
var [a, b] = [1, 2];
console.log(a, b);
//=> 1 2
// Use from functions, only select from pattern
var foo = () => [1, 2, 3];
@lelandbatey
lelandbatey / whiteboardCleaner.md
Last active Aug 24, 2019
Whiteboard Picture Cleaner - Shell one-liner/script to clean up and beautify photos of whiteboards!
View whiteboardCleaner.md

Description

This simple script will take a picture of a whiteboard and use parts of the ImageMagick library with sane defaults to clean it up tremendously.

The script is here:

#!/bin/bash
convert "$1" -morphology Convolve DoG:15,100,0 -negate -normalize -blur 0x1 -channel RBG -level 60%,91%,0.1 "$2"

Results

@yossorion
yossorion / what-i-wish-id-known-about-equity-before-joining-a-unicorn.md
Last active Aug 24, 2019
What I Wish I'd Known About Equity Before Joining A Unicorn
View what-i-wish-id-known-about-equity-before-joining-a-unicorn.md

What I Wish I'd Known About Equity Before Joining A Unicorn

Disclaimer: This piece is written anonymously. The names of a few particular companies are mentioned, but as common examples only.

This is a short write-up on things that I wish I'd known and considered before joining a private company (aka startup, aka unicorn in some cases). I'm not trying to make the case that you should never join a private company, but the power imbalance between founder and employee is extreme, and that potential candidates would

View answer.md

What is the appeal of dynamically-typed languages?

Kris Nuttycombe asks:

I genuinely wish I understood the appeal of unityped languages better. Can someone who really knows both well-typed and unityped explain?

I think the terms well-typed and unityped are a bit of question-begging here (you might as well say good-typed versus bad-typed), so instead I will say statically-typed and dynamically-typed.

I'm going to approach this article using Scala to stand-in for static typing and Python for dynamic typing. I feel like I am credibly proficient both languages: I don't currently write a lot of Python, but I still have affection for the language, and have probably written hundreds of thousands of lines of Python code over the years.

@chrislkeller
chrislkeller / import_json_appsscript.js
Last active Aug 23, 2019
Adds what amounts to an =ImportJSON() function to a Google spreadsheet... To use go to Tools --> Script Editor and add the script and save.
View import_json_appsscript.js
/**
* Retrieves all the rows in the active spreadsheet that contain data and logs the
* values for each row.
* For more information on using the Spreadsheet API, see
* https://developers.google.com/apps-script/service_spreadsheet
*/
function readRows() {
var sheet = SpreadsheetApp.getActiveSheet();
var rows = sheet.getDataRange();
var numRows = rows.getNumRows();
@branneman
branneman / better-nodejs-require-paths.md
Last active Aug 22, 2019
Better local require() paths for Node.js
View better-nodejs-require-paths.md

Better local require() paths for Node.js

Problem

When the directory structure of your Node.js application (not library!) has some depth, you end up with a lot of annoying relative paths in your require calls like:

const Article = require('../../../../app/models/article');

Those suck for maintenance and they're ugly.

Possible solutions

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