nickbauman

brew --config
HOMEBREW_VERSION: 0.9
HEAD: fc0b4b636a366db1d66db216db380d9c2a4c7a82
HOMEBREW_PREFIX: /usr/local
HOMEBREW_CELLAR: /usr/local/Cellar
CPU: dual-core 64-bit penryn
OS X: 10.7.4
Kernel Architecture: x86_64
Xcode: 4.3.3, CLT 4.3.0.0.1.1249367152
GCC-4.0: N/A

nickbauman

The goal is to insert an integer into an ordered list-like thingy.

Here's Go.

// Given g
g := []int{1, 2, 3, 4}

// Insert 44 in the middle of it
append(g[:2], append([]int{44}, g[2:]...)...)

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=

lavalamp

There are three easy to make mistakes in go. I present them here in the way they are often found in the wild, not in the way that is easiest to understand.

All three of these mistakes have been made in Kubernetes code, getting past code review at least once each that I know of.

1. Loop variables are scoped outside the loop.

What do these lines do? Make predictions and then scroll down.

func print(pi *int) { fmt.Println(*pi) }