raelgc

Setup a Local Only SMTP Email Server (Linux, Unix, Mac)

1 - Point localhost.com to your machine

Most of programs will not accept an email using just @localhost as domain. So, edit /etc/hosts file to make the domain localhost.com point to your machine, including this content to the file:

127.0.0.1 localhost.com

2 - Install Postfix

jctosta

Screen Quick Reference

Basic

Description	Command
Start a new session with session name	screen -S <session_name>
List running sessions / screens	screen -ls
Attach to a running session	screen -x
Attach to a running session with name	screen -r

harshavardhana

package main

import (
        "fmt"
        "math"
        "time"
)

// humanizeDuration humanizes time.Duration output to a meaningful value,
// golang's default ``time.Duration`` output is badly formatted and unreadable.

marianogappa

/*
Parallel processing with ordered output in Go
(you can use this pattern by importing https://github.com/MarianoGappa/parseq)

This example implementation is useful when the following 3 conditions are true:
1) the rate of input is higher than the rate of output on the system (i.e. it queues up)
2) the processing of input can be parallelised, and overall throughput increases by doing so
3) the order of output of the system needs to respect order of input

- if 1 is false, KISS!

arsham

go test -run=. -bench=. -benchtime=5s -count 5 -benchmem -cpuprofile=cpu.out -memprofile=mem.out -trace=trace.out ./package | tee bench.txt
go tool pprof -http :8080 cpu.out
go tool pprof -http :8081 mem.out
go tool trace trace.out

go tool pprof $FILENAME.test cpu.out
# (pprof) list <func name>

# go get -u golang.org/x/perf/cmd/benchstat
benchstat bench.txt

codepuncher

#!/usr/bin/env bash
# Focus window from 1st argument or
# executes command from 2nd argument
wmctrl -ia $(wmctrl -l | grep -i ${1} | awk '{print $1}') || ${2} &

erlendaakre

Basic
=====

[Shift]+[Mod]+[Enter]   - launch terminal.

[Mod]+[b]               - show/hide bar.
[Mod]+[p]               - dmenu for running programs like the x-www-browser.
[Mod]+[Enter]           - push acive window from stack to master, or pulls last used window from stack onto master.

[Mod] + [j / k]         - focus on next/previous window in current tag.

ivanzoid

package main

import "os"

func makeDirectoryIfNotExists(path string) error {
	if _, err := os.Stat(path); os.IsNotExist(err) {
		return os.Mkdir(path, os.ModeDir|0755)
	}
	return nil
}

bradtraversy

VSCode Shortcuts

List of helpful shortcuts for faster coding

If you have any other helpful shortcuts, feel free to add in the comments of this gist :)

Official List of all commands

• Windows
• Mac

j33ty

package main

import (
    "runtime"
    "fmt"
    "time"
)

func main() {
    // Print our starting memory usage (should be around 0mb)