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window.onload = function () {
if (typeof history.pushState === "function") {
history.pushState("jibberish", null, null);
window.onpopstate = function () {
history.pushState('newjibberish', null, null);
// Handle the back (or forward) buttons here
// Will NOT handle refresh, use onbeforeunload for this.
};
}
else {
@jkaihsu
jkaihsu / fibonacci.rb
Created March 7, 2013 08:22
Check, if a number i is part of the Fibonacci sequence.
def is_fibonacci?(i)
sum = [0,1]
x = 0
y = 0
while sum.max <= i
sum.length.times do |a|
x = sum[a] + sum[a-1]
end
@pies
pies / ExcelFormulas.js
Created November 29, 2012 04:55
Few Excel formulas - PMT, PPMT, XIRR - expressed in Javascript
/* Based on
* - EGM Mathematical Finance class by Enrique Garcia M. <egarcia@egm.co>
* - A Guide to the PMT, FV, IPMT and PPMT Functions by Kevin (aka MWVisa1)
*/
var ExcelFormulas = {
PVIF: function(rate, nper) {
return Math.pow(1 + rate, nper);
},
@zachleat
zachleat / gist:2008932
Created March 9, 2012 21:56
Prevent zoom on focus
// * iOS zooms on form element focus. This script prevents that behavior.
// * <meta name="viewport" content="width=device-width,initial-scale=1">
// If you dynamically add a maximum-scale where no default exists,
// the value persists on the page even after removed from viewport.content.
// So if no maximum-scale is set, adds maximum-scale=10 on blur.
// If maximum-scale is set, reuses that original value.
// * <meta name="viewport" content="width=device-width,initial-scale=1.0,maximum-scale=2.0,maximum-scale=1.0">
// second maximum-scale declaration will take precedence.
// * Will respect original maximum-scale, if set.
// * Works with int or float scale values.