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@ghalimi
ghalimi / XNPV.js
Created January 30, 2013 02:15
XNPV Function
// Copyright (c) 2012 Sutoiku, Inc. (MIT License)
function XNPV(rate, values, dates) {
var result = 0;
for (var i = 0; i < values.length; i++) {
result += values[i] / Math.pow(1 + rate, moment(dates[i]).diff(moment(dates[0]), 'days') / 365);
}
return result;
}
@Samuirai
Samuirai / captcha.md
Created June 14, 2012 20:59
G-WAN Captcha Decode

G-WAN is a new free web server. They seem to be very proud of it, or at least just want to make a lot of money. Well anyway, in almost every sentence they write, they claim that they are 20% cooler than anything else. It feels a bit arrogant. I have to admit, I don't know a lot about web servers, so I can't speak to how good they are.

However, then I saw their Captcha example. I also don't know much about machine learning algorithms, OCR, and stuff like that, but I do know how to read pixels. I also know how to compare values with python :P

demo

They say the following about their Captcha:

@mzheng
mzheng / venmo_csv.txt
Last active August 27, 2021 16:01
Download Venmo Transactions as CSV
Prerequisite
JQ: brew install jq
Chrome/Safari Inspector
Log in and open https://venmo.com/#yours
Open Chrome/Safari Inspector
Go to Network Tab and filter for 'feed'
Right click and Save "feed" as "venmo_feed.json"
Run in Terminal:
cat venmo_feed.json | jq '.data[] | {actor: .actor.name, target: .transactions[0].target.name, type: .type, message: .message, date: .created_time, amount: .transactions[0].amount}' | jq -s -r '(map(keys) | add | unique) as $cols | map(. as $row | $cols | map($row[.])) as $rows | $cols, $rows[] | @csv' > venmo_feed.csv
@aronwoost
aronwoost / README.md
Created July 25, 2011 19:46
How to install LAMP on a EC2 Amazon AMI

Launch the instance and connect with ssh.

##Update the server

sudo yum update

##Install php and MySQL packages

@niallo
niallo / gist:3109252
Created July 14, 2012 04:54
Parse Github `Links` header in JavaScript
/*
* parse_link_header()
*
* Parse the Github Link HTTP header used for pageination
* http://developer.github.com/v3/#pagination
*/
function parse_link_header(header) {
if (header.length == 0) {
throw new Error("input must not be of zero length");
}
@christophermanning
christophermanning / README.md
Last active March 30, 2023 04:24
Voronoi Diagram with Force Directed Nodes and Delaunay Links

Created by Christopher Manning

Summary

Nodes are linked to nodes in neighboring cells. The cell's color is a function of its area.

The white lines are the Delaunay triangulation and the purple cells are the Voronoi diagram.

Controls

#To install:
#
#In your git configuration (for instance, .git/config to do it at the project level), add:
#
#[merge "json_merge"]
# name = A custom merge driver for json files
# driver = coffee json_merge.coffee %O %A %B
# recursive = binary
#
#In your project's .gitattributes file, add something like:
@mbostock
mbostock / README.md
Last active June 7, 2023 18:33
Underscore’s Equivalents in D3

Collections

each(array)

Underscore example:

_.each([1, 2, 3], function(num) { alert(num); });
@shinout
shinout / LICENSE
Created September 21, 2011 16:15
Topological sort in JavaScript
Copyright 2012 Shin Suzuki<shinout310@gmail.com>
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
// http://mrl.nyu.edu/~perlin/noise/
var ImprovedNoise = function () {
var p = [151,160,137,91,90,15,131,13,201,95,96,53,194,233,7,225,140,36,103,30,69,142,8,99,37,240,21,10,
23,190,6,148,247,120,234,75,0,26,197,62,94,252,219,203,117,35,11,32,57,177,33,88,237,149,56,87,
174,20,125,136,171,168,68,175,74,165,71,134,139,48,27,166,77,146,158,231,83,111,229,122,60,211,
133,230,220,105,92,41,55,46,245,40,244,102,143,54,65,25,63,161,1,216,80,73,209,76,132,187,208,
89,18,169,200,196,135,130,116,188,159,86,164,100,109,198,173,186,3,64,52,217,226,250,124,123,5,
202,38,147,118,126,255,82,85,212,207,206,59,227,47,16,58,17,182,189,28,42,223,183,170,213,119,