nruth

class Tests
  SUBTESTS = %w(Abstract Decision Quantitative Verbal)
end

describe Tests do

  describe "before assigning @ - " do
    describe "this doesn't work because the loops are all at the same describe level (the befores override one another)" do
      Tests::SUBTESTS.each do |test|
        before(:each) do

kentbrew

The Problem

Standard practices say no non-root process gets to talk to the Internet on a port less than 1024. How, then, could I get Node talking on port 80 on EC2? (I wanted it to go as fast as possible and use the smallest possible share of my teeny tiny little micro-instance's resources, so proxying through nginx or Apache seemed suboptimal.)

The temptingly easy but ultimately wrong solution:

Alter the port the script talks to from 8000 to 80:

}).listen(80);

pmarreck

#!/usr/bin/env sh
# fake_time_machine.sh

# Fake Time Machine
# by Peter Marreck
# Based on ideas in http://blog.interlinked.org/tutorials/rsync_time_machine.html
# 9/2011

# E_BADARGS=85
# if [ -z "$1" ]

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

stuartmemo

// Takes string of Note + Octave
// Example:
// var frequency = getFrequency('C3');

var getFrequency = function (note) {
    var notes = ['A', 'A#', 'B', 'C', 'C#', 'D', 'D#', 'E', 'F', 'F#', 'G', 'G#'],
        octave,
        keyNumber;

    if (note.length === 3) {

dergachev

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

Brottweiler

Width	Height	Standard	Divisible by 8
128	72		Yes
256	144		Yes
384	216		Yes
512	288		Yes
640	360		Yes
768	432		Yes
896	504		Yes
1024	576		Yes

AlexeyGy

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import struct
import sys
sys.stdout.flush()

def main():
    with open('DRAKS0005.sl2', 'rb') as fo:
        fo.seek(0x3c0, 0)

citrusui

How do I dropdown?

This is how you dropdown.

<details>
<summary>How do I dropdown?</summary>
<br>
This is how you dropdown.

systemed

(Dijkstra and plain A* are generally not included here as there are thousands of 
implementations, though I've made an exception for rare Ruby and Crystal versions,
and for Thor, Mapzen's enhanced A*. )

A*                                      Ruby    https://github.com/georgian-se/shortest-path
A*                                      Crystal https://github.com/petoem/a-star.cr
A* (bidirectional with shortcuts)       C++     https://github.com/valhalla/valhalla
NBA*                                    JS      https://github.com/anvaka/ngraph.path
NBA*                                    Java    https://github.com/coderodde/GraphSearchPal
NBA*                                    Java    https://github.com/coderodde/FunkyPathfinding