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// declaration
function foo (n) { return n + 1; }
// expression
// note, fat arrow functions have very different meaning (usually what I want, though)
var foo = function (n) { return n + 1; };
var foo = (n) => { return n + 1; };
var foo = n => n + 1;
// object methods
@kongchen
kongchen / gist:941a652882d89bb96f87
Created March 18, 2015 06:09
utf8 utf16 in javascript
/**
* Convert a UTF16 string to UTF8.
* @param {String} input
* @returns {String}
*/
utf16To8: function (input) {
var _unescape = function(s) {
function d(x, n) {
return String.fromCharCode(parseInt(n, 16));
}
// Make strings safe for innerHTML and attribute insertion (templates):
var escapeHTML = (function() {
var entityMap = {
'&': '&',
'<': '&lt;',
'>': '&gt;',
'"': '&quot;',
"'": '&#39;'
},
re = /[&<>"']/g;
@Rich-Harris
Rich-Harris / footgun.md
Last active May 6, 2024 10:24
Top-level `await` is a footgun

Edit — February 2019

This gist had a far larger impact than I imagined it would, and apparently people are still finding it, so a quick update:

  • TC39 is currently moving forward with a slightly different version of TLA, referred to as 'variant B', in which a module with TLA doesn't block sibling execution. This vastly reduces the danger of parallelizable work happening in serial and thereby delaying startup, which was the concern that motivated me to write this gist
  • In the wild, we're seeing (async main(){...}()) as a substitute for TLA. This completely eliminates the blocking problem (yay!) but it's less powerful, and harder to statically analyse (boo). In other words the lack of TLA is causing real problems
  • Therefore, a version of TLA that solves the original issue is a valuable addition to the language, and I'm in full support of the current proposal, which you can read here.

I'll leave the rest of this document unedited, for archaeological

@Hendrixer
Hendrixer / editor.css
Last active March 3, 2024 14:29
VS code custom CSS for theme
.composite-title, .composite-title, .vs-dark .monaco-workbench>.activitybar>.content {
background-color: rgba(40, 44, 52, 1) !important;
}
.tabs-container, .tab, .tab.active, .title-actions, .tablist, .tabs-container, .tabs, .composite.title {
background-color: rgba(40, 44, 52, 1) !important;
}
.tab.active, .tab {
border-right: 0px !important;
@timoxley
timoxley / 1.rreaddir.js
Last active August 6, 2023 17:13
async/await recursive fs readdir
import { join } from 'path'
import { readdir, stat } from 'fs-promise'
async function rreaddir (dir, allFiles = []) {
const files = (await readdir(dir)).map(f => join(dir, f))
allFiles.push(...files)
await Promise.all(files.map(async f => (
(await stat(f)).isDirectory() && rreaddir(f, allFiles)
)))
return allFiles
@myshov
myshov / function_invocation.js
Last active January 21, 2024 15:14
11 Ways to Invoke a Function
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);
@oliveratgithub
oliveratgithub / emojis.json
Last active May 9, 2024 20:25
Emoji-list with emojis, names, shortcodes, unicode and html entities [massive list]
{
"emojis": [
{"emoji": "👩‍👩‍👧‍👧", "name": "family: woman, woman, girl, girl", "shortname": ":woman_woman_girl_girl:", "unicode": "1F469 200D 1F469 200D 1F467 200D 1F467", "html": "&#128105;&zwj;&#128105;&zwj;&#128103;&zwj;&#128103;", "category": "People & Body (family)", "order": ""},
{"emoji": "👩‍👩‍👧‍👦", "name": "family: woman, woman, girl, boy", "shortname": ":woman_woman_girl_boy:", "unicode": "1F469 200D 1F469 200D 1F467 200D 1F466", "html": "&#128105;&zwj;&#128105;&zwj;&#128103;&zwj;&#128102;", "category": "People & Body (family)", "order": ""},
{"emoji": "👩‍👩‍👦‍👦", "name": "family: woman, woman, boy, boy", "shortname": ":woman_woman_boy_boy:", "unicode": "1F469 200D 1F469 200D 1F466 200D 1F466", "html": "&#128105;&zwj;&#128105;&zwj;&#128102;&zwj;&#128102;", "category": "People & Body (family)", "order": ""},
{"emoji": "👨‍👩‍👧‍👧", "name": "family: man, woman, girl, girl", "shortname": ":man_woman_girl_girl:", "unicode": "1F468 200D 1F469 200D 1F467 200D 1F467", "html": "&#128104;&zwj;&#128105;&z
/**
* Educational "Free-list" memory allocator.
*
* Maintains explicit list of free memory blocks, reuses blocks on free.
* Implements "first-fit" strategy. Uses pre-allocated heap of 64 bytes,
* with 32-bit machine word size.
*
* TODO:
*
* - Implement "best-fit" strategy
@mohanpedala
mohanpedala / bash_strict_mode.md
Last active May 17, 2024 12:44
set -e, -u, -o, -x pipefail explanation