DrGo

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.

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) }

i3 Window Manager Cheat Sheet

$mod refers to the modifier key (alt by default)

General

startx i3 start i3 from command line
$mod+<Enter> open a terminal
$mod+d open dmenu (text based program launcher)
$mod+r resize mode ( or to leave resize mode)
$mod+shift+e exit i3

	package main

	import (
	"fmt"
	"io"
	"net/http"
	"os"
	)

	func init() {

	if _, err := os.Stat("/path/to/whatever"); os.IsNotExist(err) {
	// path/to/whatever does not exist
	}

	if _, err := os.Stat("/path/to/whatever"); !os.IsNotExist(err) {
	// path/to/whatever exists
	}

	#! /bin/bash
	# Wrapper for "stata -b" which issues an informative error msg and appropriate
	# (i.e., non-zero) return code

	# The basic idea for this script (including grepping the log file to determine
	# whether there was an error) was taken from a similar script posted by Brendan
	# Halpin on his blog at http://teaching.sociology.ul.ie/bhalpin/wordpress/?p=122

	args=$# # number of args

	package main

	import (
	"encoding/json"
	"log"
	"net/http"
	"reflect"
	"time"

	"github.com/gorilla/context"

	/*
	glog-example
	------------

	background
	---
	You probably want to read the source code comments at the top of the glog.go file in
	the golang/glog repository on github.com. Located here: https://github.com/golang/glog/blob/master/glog.go

	setup

	/*
	fmt.Println(Bitmask(0x6).IsSet(0x2))
	fmt.Println(Bitmask(f.FileHeader.Characteristics).ListDescriptions(charValues))
	fmt.Println(Bitmask(f.FileHeader.Characteristics).ListValues(charValues))
	*/

	type Bitmask uint16

	// BitValue is a value and a description
	type BitValue struct {

	#hcdb {
	display: none;
	}

	div.hird_120 {
	display: none;
	}

	body.terkep {
	padding-top: 0 !important;