Eoin O'Neill thegogz
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| # Ways to execute a shell script in Ruby | |
| # Example Script - Joseph Pecoraro | |
| cmd = "echo 'hi'" # Sample string that can be used | |
| # 1. Kernel#` - commonly called backticks - `cmd` | |
| # This is like many other languages, including bash, PHP, and Perl | |
| # Synchronous (blocking) | |
| # Returns the output of the shell command | |
| # Docs: http://ruby-doc.org/core/classes/Kernel.html#M001111 |
pelf
/ snow.html
Created
November 26, 2010 02:51
html5 canvas snow flakes (as seen on http://goplanapp.com/home/blackfriday)
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| <!DOCTYPE html> | |
| <head> | |
| <title>Snow</title> | |
| <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js" type="text/javascript"></script> | |
| <script src="snow.js" type="text/javascript"/></script> | |
| </head> | |
| <body onload="init();"> | |
| <canvas id="bgcanvas" width="410" height="316" style="position:absolute;z-index:2"></canvas> | |
| <img src="globe_layers_2.png" style="position:absolute;z-index:3"> | |
| <canvas id="fgcanvas" width="410" height="316" style="position:absolute;z-index:4"></canvas> |
DiegoSalazar
/ validate_credit_card.js
Last active
April 24, 2024 12:51
Luhn algorithm in Javascript. Check valid credit card numbers
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| // Takes a credit card string value and returns true on valid number | |
| function valid_credit_card(value) { | |
| // Accept only digits, dashes or spaces | |
| if (/[^0-9-\s]+/.test(value)) return false; | |
| // The Luhn Algorithm. It's so pretty. | |
| let nCheck = 0, bEven = false; | |
| value = value.replace(/\D/g, ""); | |
| for (var n = value.length - 1; n >= 0; n--) { |