crgimenes

func createDirIfNotExist(pathName string) (err error) {
	if _, err = os.Stat(pathName); err != nil {
		if os.IsNotExist(err) {
			err = os.MkdirAll(pathName, os.ModePerm)
			return
		}
	}
	return
}

crgimenes

import "crypto/rand"

func RandStr(strSize int) (ret string, err error) {
	alphanum := "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
	var bytes = make([]byte, strSize)
	_, err = rand.Read(bytes)
	if err != nil {
		return
	}
	for k, v := range bytes {

crgimenes

package main

import (
	"fmt"
	"io/ioutil"
	"os"
)

func main() {
	input, err := ioutil.ReadAll(os.Stdin)

crgimenes

package main

import (
    "crypto/tls"
    "crypto/x509"
    "fmt"
    "io"
    "log"
)

crgimenes

func parseArray(value interface{}) string {
	switch value.(type) {
	case []interface{}:
		var aux string
		for _, v := range value.([]interface{}) {
			if aux != "" {
				aux += ","
			}
			aux += parseArray(v)
		}

crgimenes

func FindSubmatch(text string, regex string, submatch int) (ret string) {
    var r = regexp.MustCompile(regex)
    a := r.FindStringSubmatch(text)
    if len(a) <= submatch {
        ret = ""
        return
    }
    ret = a[submatch]
    ret = strings.TrimSpace(ret)
    return

crgimenes

package fibonacci

type Memoized func(int) int
var fibMem = Memoize(fib)

func Memoize(mf Memoized) Memoized {
	cache := make(map[int]int)
	return func(key int) int {
		if val, found := cache[key]; found {
			return val

crgimenes

func TestHTTPHandler(t *testing.T) {
	w := httptest.NewRecorder()
	expected := "{\n\t\"error\": \"test error\"\n}\n"

	HTTPHandler(w, nil)
	b := w.Body.Bytes()

	if string(b) != expected {
		t.Errorf("expected %q, want %q", expected, string(b))

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"
)