sindresorhus

Pure ESM package

The package that linked you here is now pure ESM. It cannot be require()'d from CommonJS.

This means you have the following choices:

1. Use ESM yourself. (preferred)
   Use import foo from 'foo' instead of const foo = require('foo') to import the package. You also need to put "type": "module" in your package.json and more. Follow the below guide.
2. If the package is used in an async context, you could use await import(…) from CommonJS instead of require(…).
3. Stay on the existing version of the package until you can move to ESM.

vals

mattzeunert

--- Raw source ---
function add(a, b){
	return a + b;
}

print(add(15, 19));

for (var i=0;i<1000;i++){
	add(i, 22);
}

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

---

cfj

var _log = console.log;

window.console.log = function(log){
  _log.call(console, log.reverse ? log.reverse() : typeof log === 'string' ? log.split('').reverse().join('') : typeof log === 'number' ? log.toString().split('').reverse().join('') : typeof log === 'boolean' ? !log : log);
};

seboudry

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns                     on recent CPU
L2 cache reference ........................... 7 ns                     14x L1 cache
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns                     20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs 4X memory

VorticonCmdr

heap code: http://eloquentjavascript.net/appendix2.html
hyperloglog: https://github.com/sedictor/loglog
top k elements: http://stevehanov.ca/blog/index.php?id=122