| /** | |
| * Converts an RGB color value to HSL. Conversion formula | |
| * adapted from http://en.wikipedia.org/wiki/HSL_color_space. | |
| * Assumes r, g, and b are contained in the set [0, 255] and | |
| * returns h, s, and l in the set [0, 1]. | |
| * | |
| * @param Number r The red color value | |
| * @param Number g The green color value | |
| * @param Number b The blue color value | |
| * @return Array The HSL representation |
| """ | |
| Convert a MongoDB ObjectID to a version-1 UUID. | |
| Python 2.7+ required for datetime.timedelta.total_seconds(). | |
| ObjectID: | |
| - UNIX timestamp (32 bits) | |
| - Machine identifier (24 bits) | |
| - Process ID (16 bits) | |
| - Counter (24 bits) |
| #!/bin/bash | |
| echo -e "Powerline glyphs:\n\ | |
| Code points Glyphe Description Old code point | |
| U+E0A0 \xee\x82\xa0 Version control branch (U+2B60 \xe2\xad\xa0 )\n\ | |
| U+E0A1 \xee\x82\xa1 LN (line) symbol (U+2B61 \xe2\xad\xa1 )\n\ | |
| U+E0A2 \xee\x82\xa2 Closed padlock (U+2B64 \xe2\xad\xa4 )\n\ | |
| U+E0B0 \xee\x82\xb0 Rightwards black arrowhead (U+2B80 \xe2\xae\x80 )\n\ | |
| U+E0B1 \xee\x82\xb1 Rightwards arrowhead (U+2B81 \xe2\xae\x81 )\n\ | |
| U+E0B2 \xee\x82\xb2 Leftwards black arrowhead (U+2B82 \xe2\xae\x82 )\n\ |
Only do this if you understand the consequences: all node programs will be able to bind on ports < 1024
sudo setcap 'cap_net_bind_service=+ep' /usr/local/bin/node
Important: your node location may vary. Use which node to find it, or use it directly in the command:
| /** | |
| * @fileoverview Pearson correlation score algorithm. | |
| * @author matt.west@kojilabs.com (Matt West) | |
| * @license Copyright 2013 Matt West. | |
| * Licensed under MIT (http://opensource.org/licenses/MIT). | |
| */ | |
| /** | |
| * Calculate the person correlation score between two items in a dataset. |
| var distancePoints = function(p1, p2) { | |
| // Find the distance between two points | |
| return Math.sqrt(Math.pow(p2[0] - p1[0], 2) + Math.pow(p2[1] - p1[1], 2)); | |
| }; | |
| var intersectCircles = function (c1, r1, c2, r2) { | |
| // Find the points of intersection for two circles | |
| // Based on: http://stackoverflow.com/a/3349134 | |
| var d = distancePoints(c1, c2); | |
| if (d > r1 + r2) // Circles do not overlap |
| .SVGIcon { | |
| -webkit-font-smoothing: antialiased; | |
| -moz-osx-font-smoothing: grayscale; | |
| /* fix webkit/blink poor rendering issues */ | |
| transform: translate3d(0,0,0); | |
| /* it's better defined directly because of the cascade shit | |
| width: inherit; | |
| height: inherit; |
| /* ******************************************************************************************* | |
| * THE UPDATED VERSION IS AVAILABLE AT | |
| * https://github.com/LeCoupa/awesome-cheatsheets | |
| * ******************************************************************************************* */ | |
| // 0. Synopsis. | |
| // http://nodejs.org/api/synopsis.html |
| // Part of https://github.com/chris-rock/node-crypto-examples | |
| var crypto = require('crypto'), | |
| algorithm = 'aes-256-ctr', | |
| password = 'd6F3Efeq'; | |
| function encrypt(buffer){ | |
| var cipher = crypto.createCipher(algorithm,password) | |
| var crypted = Buffer.concat([cipher.update(buffer),cipher.final()]); | |
| return crypted; |
| <html> | |
| <head> | |
| <title>AudioPlayground</title> | |
| <style>* {box-sizing: border-box;}</style> | |
| </head> | |
| <body> | |
| <h3>AudioPlayground</h3> | |
| <p>If you're happy and you know it, clap your hands!</p> | |
| <script> | |
| var Recording = function(cb){ |