jFransham

Achieving warp speed with Rust

Contents:

• Number one optimization tip: don't
• Never optimize blindly
• Don't bother optimizing one-time costs
• Improve your algorithms
• CPU architecture primer
• Keep as much as possible in cache
• Keep as much as possible in registers

john2x

Clojure Destructuring Tutorial and Cheat Sheet

(Related blog post)

Simply put, destructuring in Clojure is a way extract values from a datastructure and bind them to symbols, without having to explicitly traverse the datstructure. It allows for elegant and concise Clojure code.

Vectors and Sequences

sanxiyn

#include <assert.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

enum type {
    NIL,

wvengen

Finding a Ruby memory leak using a time analysis

When developing a program in Ruby, you may sometimes encounter a memory leak. For a while now, Ruby has a facility to gather information about what objects are laying around: ObjectSpace.

There are several approaches one can take to debug a leak. This discusses a time-based approach, where a full memory dump is generated every, say, 5 minutes, during a time that the memory leak is showing up. Afterwards, one can look at all the objects, and find out which ones are staying around, causing the

frsyuki

My thoughts on MessagePack

Hi. My name is Sadayuki "Sada" Furuhashi. I am the author of the MessagePack serialization format as well as its implementation in C/C++/Ruby.

Recently, MessagePack made it to the front page of Hacker News with this blog entry by Olaf, the creator of the Facebook game ZeroPilot. In the comment thread, there were several criticisms for the blog post as well as MessagePack itself, and I thought this was a good opportunity for me to address the questions and share my thoughts.

My high-level response to the comments

To the best of my understanding, roughly speaking, the criticisms fell into the following two categories.

andkerosine

$stack, $draws = [], {}

def method_missing *args
  return if args[0][/^to_/]
  $stack << args.map { |a| a or $stack.pop }
  $draws[$stack.pop(2)[0][0]] = args[1] if args[0] == :<
end

class Array
  def +@

ibdknox

#!/bin/bash

name=webnoir
pidfile=/var/run/$name.pid

if [ -f "$pidfile" ]; then
    pid=`cat $pidfile`
    running=`ps p $pid |wc -l`
    if [ $running -eq 1 ]; then
        pid=

benmoss

# deploy.rb

namespace :ts_remote do
  task :conf do
    run <<-CMD
      cd #{current_release}
      &&
      RAILS_ENV=#{rails_env} rake ts:conf
      &&
      rsync --progress #{current_release}/config/#{rails_env}.sphinx.conf sphinxsearch@db-server:/home/sphinxsearch/

rastasheep

MiniTest::Spec

use must for positive expectations and wont for negative expectations.

• must_be | list.size.must_be :==, 0
• must_be_close_to | subject.size.must_be_close_to 1,1
• must_be_empty | list.must_be_empty
• must_be_instance_of | list.must_be_instance_of Array
• must_be_kind_of | list.must_be_kind_of Enumerable

gist:858586

(ns game.components.core
  (:use
    [clojure.contrib.def :only (defvar-)]
    (game.utils [core :only (safe-merge 
                              keywords-to-hash-map
                              get-unique-number
                              runmap 
                              if-do
                              distinct-seq?)])))