akovardin

Go, multiple packages and coveralls.io

Single profile for single Go package

For Go projects that consist of only one package, the following Travis configuration is enough to get started with coveralls.io. You may want to encrypt your $COVERALLS_TOKEN via Travis encryption keys though.

language: go
go:
 - 1.3.1

akovardin

package resources

import (
	"net/http/httptest"
	"strings"
	"testing"

	mocket "github.com/Selvatico/go-mocket"
	"github.com/jinzhu/gorm"
	"github.com/labstack/echo"

akovardin

import (
    "crypto/md5"
    "encoding/hex"
)

func GetMD5Hash(text string) string {
    hasher := md5.New()
    hasher.Write([]byte(text))
    return hex.EncodeToString(hasher.Sum(nil))
}

akovardin

/*
   This is a go program to download pictures from a tumblr blog page.

   To Build:

       go build -o tumblr-download tumblr-download.go

   To Run:

       # download the photos on the first page of tumblr blog

akovardin

// Example program that uses blakjack/webcam library
package main

import (
	"fmt"
	"os"

	"github.com/blackjack/webcam"
)

akovardin

type reader struct {
  r   io.Reader
  err error
}

func (r *reader) read(data interface{}) {
  if r.err == nil {
    r.err = binary.Read(r.r, binary.BigEndian, data)
  }
}

akovardin

b := make([]byte, os.Getpagesize())

akovardin

1. Check sysctl file-max limit:

$ cat /proc/sys/fs/file-max

If the limit is lower than your desired value, open the /etc/sysctl.conf and add this line at the end of file:

fs.file-max = 65536

akovardin

package main

import (
	"log"
	"net/smtp"
)

func main() {
	send("hello there")
}

akovardin

Опасная ловушка при работе с интерфейсами в Go.

Описание тут https://github.com/golang/go/wiki/MethodSets

Так работает. Запустить.

package main

import "fmt"