start new:
tmux
start new with session name:
tmux new -s myname
/* Returns probability of occuring below and above target price. */ | |
function probability(price, target, days, volatility) { | |
var p = price; | |
var q = target; | |
var t = days / 365; | |
var v = volatility; | |
var vt = v*Math.sqrt(t); | |
var lnpq = Math.log(q/p); |
#!/usr/bin/env python | |
"""Epic script to rename scary uppercase extensions (like .JPG) to | |
more friendly lowercase (like .jpg). | |
How to use | |
========== | |
Recursively rename all files in the current directory:: | |
fixext |
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> | |
<html> | |
<head> | |
<link rel="stylesheet" href="http://code.jquery.com/qunit/git/qunit.css" type="text/css" media="screen" /> | |
<!-- when.js Promises implementation --> | |
<script src="https://raw.github.com/cujojs/when/master/when.js"></script> | |
<!-- Unit testing and mocking framework --> | |
<script type="text/javascript" src="http://code.jquery.com/qunit/git/qunit.js"></script> |
/* | |
PutCallFlag: Either "put" or "call" | |
S: Stock Price | |
X: Strike Price | |
T: Time to expiration (in years) | |
r: Risk-free rate | |
v: Volatility | |
This is the same one found in http://www.espenhaug.com/black_scholes.html | |
but written with proper indentation and a === instead of == because it's |
#!/bin/bash | |
set -o errexit | |
set -o nounset | |
if [[ ${#} -ne 1 ]] | |
then | |
echo "Usage: ${0} upstart-conf-file" >&2 | |
exit 1 | |
fi |
App = new Marionette.Application(); | |
App.addRegions { | |
"headerRegion": "#header" | |
"topMenuRegion": "#top-menu" | |
"mainRegion" : "#main" | |
} | |
App.on 'initialize:after', -> | |
Backbone.history.start() |
The BBC has a server-side image service which provides developers with multiple sized versions of any image they request. It works in a similar fashion to http://placehold.it/ but it also handles the image ratios returned (where as placehold.it doesn't).
The original BBC News process (and my re-working of the script) follows roughly these steps...
div
s within the page (which have a class of delayed-image-load
) into a transparent GIF using a Base64 encoded string.
width
& height
HTML attributes of the image to the required sizediv
has custom data-attr
set server-side to the size of the imageimage-replace
onto each newly created transparent imagesetTimeout
to unblock the UI thread and which calls a function resizeImages
which enhances the image-replace
images so their source is now set to a URL whe// Timer to continue counting while using bcrypt. | |
// Demonstrates that the bcrypt functions are asynchronous. | |
;(function() { | |
console.log('start timer'); | |
var x = 1; | |
setInterval(function() { | |
console.log('Timer: ' + x); | |
x++; | |
}, 1000); | |
}()); |
function onlyStatic (middleware) { | |
return function (req, res, next) { | |
var match = /(\.css|\.eot|\.gif|\.html|\.js|\.png|\.svg|\.ttf|\.woff|\.jpg)($|\?.*$)/ig.exec(req.originalUrl); | |
if (!match) return next(); | |
middleware(req, res, next); | |
}; | |
} | |
//usage | |
this.use(onlyStatic(express.static(__dirname + "/public"))); |