crgimenes

func closer(body io.Closer) {
	err := body.Close()
	if err != nil {
		log.Errorln(err)
	}
}

// defer closer(fileDescriptor)

crgimenes

// https://play.golang.org/p/8SjYn-cisj
package main

import (
	"bytes"
	"fmt"
	"io"
	"os"
)

crgimenes

func execHelper(path, name string, arg ...string) (err error) {
	cmd := exec.Command(name, arg...)
	cmd.Dir = path
	cmd.Stdout = os.Stdout
	cmd.Stderr = os.Stderr
	err = cmd.Run()
	return
}

crgimenes

package helper

// closer close descriptor and log error
func closer(f io.Closer) {
	err := f.Close()
	if err != nil {
		log.Errorln("closing ", err)
	}
}

crgimenes

package main

import (
	"context"
	"flag"
	"fmt"
	"io"
	"os"
	"syscall"

crgimenes

func newFileName() string {
	buff := make([]byte, 6)
	rand.Read(buff)
	return fmt.Sprintf("%v-%X\n", time.Now().UTC().Format("2006-01-02T150405"), buff)
}

crgimenes

Configure environment variable

export DATABASE_URL=postgres://postgres@localhost/dbname?sslmode=disable 

Run in CLI

go run main.go -page 1

crgimenes

package strarray

import (
	"encoding/json"
	"errors"
)

var (
	// ErrUnsupportedType is returned if the type is not implemented
	ErrUnsupportedType = errors.New("unsupported type")

crgimenes

package main

import (
	"context"
	"log"

	"github.com/chromedp/chromedp"
)

func main() {

crgimenes

package main

import (
	"fmt"
	"net"
	"net/http"

	"github.com/gorilla/mux"
)