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@mattetti
mattetti / gist:3798173
Last active April 16, 2023 03:09
async fetching of urls using goroutines and channels
package main
import (
"fmt"
"net/http"
"time"
)
var urls = []string{
"https://splice.com/",
@ogrrd
ogrrd / dnsmasq OS X.md
Last active May 14, 2024 08:39
Setup dnsmasq on OS X

Never touch your local /etc/hosts file in OS X again

To setup your computer to work with *.test domains, e.g. project.test, awesome.test and so on, without having to add to your hosts file each time.

Requirements

Install

@cdipaolo
cdipaolo / HaversinFormula.go
Created April 15, 2015 01:31
Golang functions to calculate the distance in meters between long,lat points on Earth.
// haversin(θ) function
func hsin(theta float64) float64 {
return math.Pow(math.Sin(theta/2), 2)
}
// Distance function returns the distance (in meters) between two points of
// a given longitude and latitude relatively accurately (using a spherical
// approximation of the Earth) through the Haversin Distance Formula for
// great arc distance on a sphere with accuracy for small distances
//
@andystanton
andystanton / Start up local Docker Machine on OSX automatically.md
Last active April 3, 2024 00:50
Start up local Docker Machine on OSX automatically.

Notice

This script is no longer required with Docker for Mac which includes an option to run Docker at startup and doesn't use docker-machine to administer the local Docker engine.

Requirements

  • Docker Machine + Docker
  • curl
  • A Virtualbox-driven Docker Machine called "default" docker-machine create --driver virtualbox default (this is the default with Docker toolkit).
@petrkohut
petrkohut / howto.md
Last active October 20, 2021 08:57
How to have redis-cli and psql installed on machine using Docker

How to install redis-cli and psql client on your machine with Docker

Preparing docker images

We will use minimalistic Linux distribution called Alpine (5MB)

Dockerfile of redis-cli

FROM alpine:latest
RUN apk --update add redis
@janisz
janisz / bench_test.go
Created March 24, 2016 13:40
Go Free cache vs BigCache
package bigcache
import (
"encoding/binary"
"testing"
"time"
"github.com/allegro/bigcache"
"github.com/coocood/freecache"
)
@jarun
jarun / Travis CI local install
Created June 5, 2016 19:00
How to install Travis CI locally on Ubuntu 16.04
sudo apt install ruby ruby-dev
sudo gem install travis
# install path: /var/lib/gems/
@soroushjp
soroushjp / deepcopy.go
Last active February 7, 2024 09:42
Golang: deepcopy map[string]interface{}. Could be used for any other Go type with minor modifications.
// Package deepcopy provides a function for deep copying map[string]interface{}
// values. Inspired by the StackOverflow answer at:
// http://stackoverflow.com/a/28579297/1366283
//
// Uses the golang.org/pkg/encoding/gob package to do this and therefore has the
// same caveats.
// See: https://blog.golang.org/gobs-of-data
// See: https://golang.org/pkg/encoding/gob/
package deepcopy
@snakevil
snakevil / docker-and-s6-my-new-favorite-process-supervisor.md
Created September 29, 2016 05:50
【译】Docker 和 S6 ——我的进程管理器新欢
@travisjeffery
travisjeffery / functional-options.md
Last active April 23, 2023 11:13
How to do functional options in Golang

Here's the simplest example showing how to do functional options in Golang.

They're a great way to enable users to set options and ease adding new options later.

package main

import (
	"flag"
	"fmt"