retronym

// scala 2.7 simple type constraint. This can only constrain a type parameter of this function.
// Below, in ListW.sumint28, we can't use this approach because we want to constrain T, 
// a type param of the enclosing trait.
def sumint27A[T <: Int](l: List[T]) : Int = l.reduceLeft((a: Int, b: Int) => a + b)

trait IntLike[X] extends (X => Int)
object IntLike {
  implicit val intIntLike: IntLike[Int] = new IntLike[Int] { def apply(x: Int) = identity(x) }
}

songpp

package algrithsm

import annotation.tailrec

/**
 * User: flower
 * Date: 11-1-18
 * Time: 下午6:22
 * Description: 
 */

markjaquith

#!/bin/bash
#
# git-svn-diff originally by (http://mojodna.net/2009/02/24/my-work-git-workflow.html)
# modified by mike@mikepearce.net
# modified by aconway@[redacted] - handle diffs that introduce new files
# modified by t.broyer@ltgt.net - fixes diffs that introduce new files
# modified by m@rkj.me - fix sed syntax issue in OS X
#
# Generate an SVN-compatible diff against the tip of the tracking branch

songpp

package algrithsm

import collection.mutable.Stack
import org.slf4j.{LoggerFactory, Logger}
import Console._

/**
 * User: flower
 * Date: 11-3-29
 * Time: 下午3:04

lucasfais

Sublime Text 2 – Useful Shortcuts (Mac OS X)

General

⌘T	go to file
⌘⌃P	go to project
⌘R	go to methods
⌃G	go to line
⌘KB	toggle side bar
⌘⇧P	command prompt

jimbojsb

Step 0:

Get Homebrew installed on your mac if you don't already have it

Step 1:

Install highlight. "brew install highlight". (This brings down Lua and Boost as well)

Step 2:

rampion

{-# LANGUAGE GADTs #-}
{-# LANGUAGE RankNTypes #-}
{-# LANGUAGE StandaloneDeriving #-}
module RedBlackTree where

data Zero 
data Succ n
type One = Succ Zero

data Black

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

preshing

#include <stdio.h>
#include <stdlib.h>
#include <assert.h>

typedef unsigned int u32;
typedef unsigned long long u64;

//-------------------------------------------------------------------------
// WorkArea
//-------------------------------------------------------------------------

willurd

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000