tristanwietsma
/ fx_arb.py
Created
May 22, 2013 05:03
Forex arbitrage hiring puzzle. While not realistic, the algorithm discovers currency arbitrage opportunities given a JSON with exchange rates. The method used is the Bellman-Ford shortest path algorithm.
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| from __future__ import division | |
| import urllib, json, string, datetime | |
| from itertools import permutations | |
| from math import log | |
| def _bf(V, E, src): | |
| # init | |
| dist = dict(zip(V, [float('Inf') for v in V])) | |
| pred = dict(zip(V, [None for v in V])) |
istepanov
/ install_gettext.sh
Created
October 24, 2012 10:46
Compile and install gettext.so PHP extension for Mac OS X 10.8 Mountain Lion
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| #!/usr/bin/sh | |
| # Scipt for installing mcrypt.so extension for PHP 5.3.13 (default PHP for OS X 10.8 Mountain Lion) | |
| mkdir /tmp/gettext | |
| cd /tmp/gettext | |
| curl --location --progress-bar http://us.php.net/get/php-5.3.13.tar.gz/from/nl.php.net/mirror | tar -zx | |
| brew update |
g3d
/ gist:2709563
Last active
May 15, 2025 07:00
— forked from saetia/gist:1623487
Clean Install – OS X 10.11 El Capitan
#Mac OS X
wrburgess
/ gist:2086949
Created
March 19, 2012 00:20
Setting up New Relic for Sinatra on Heroku #newrelic #sinatra #heroku
In terminal:
heroku addons:add newrelic:standard
Add this gem to your Gemfile: gem 'newrelic_rpm'
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| //Simple d3.js barchart example to illustrate d3 selections | |
| //other good related tutorials | |
| //http://www.recursion.org/d3-for-mere-mortals/ | |
| //http://mbostock.github.com/d3/tutorial/bar-1.html | |
| var w = 300 | |
| var h = 300 |
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