https://www.cnblogs.com/followyou/p/12187949.html

error

https://www.cnblogs.com/followyou/p/12185514.html

断言

https://www.cnblogs.com/followyou/p/12185509.html

定义函数类型

type ExposureQualityService interface {

}

type NewExposureQualityServiceFunc func() ExposureQualityService

格式转换

https://www.cnblogs.com/followyou/p/12194128.html

打断点

fmt.Println(exposureData)
os.Exit(1)

休眠

func Sleep(d Duration)

const (
Nanosecond Duration = 1
Microsecond = 1000 * Nanosecond
Millisecond = 1000 * Microsecond
Second = 1000 * Millisecond
Minute = 60 * Second
Hour = 60 * Minute
)

urlencode

• 字符串

package main

import (
	"fmt"
	"net/url"
)

func main() {
	query := "Hellö Wörld@Golang"
	fmt.Println(url.QueryEscape(query))
}

• 多个参数

package main

import (
	"fmt"
	"net/url"
)

func main() {
	params := url.Values{}
	params.Add("name", "@Rajeev")
	params.Add("phone", "+919999999999")

	fmt.Println(params.Encode())
}

• 编码路径

package main

import (
	"fmt"
	"net/url"
)

func main() {
	path := "path with?reserved+characters"
	fmt.Println(url.PathEscape(path))
}

//  Output
// path%20with%3Freserved+characters

解码参考 https://www.urldecoder.io/golang/

去除首尾空格

package main

import (
	"fmt"
	"strings"
)

func main() {
	str := " hello world!  "
	str = strings.TrimSpace(str)
	fmt.Println(str)
}

字符串截取

str := "oeryoqpqpqepqw"
content = str[1:10]
fmt.println(content)

ip转number

func Ip2long(ip string) int64 {
	var cip net.IP
	cip = []byte(ip)
	// ipv4
	if cip.To4() != nil {
		num, _ := exnet.IP2Long(cip)
		return int64(num)
	} else {
		bigint := ipv6ToInt(ip)
		return bigint
	}
}

func ipv6ToInt(ip string) int64 {
	IPv6Int := big.NewInt(0)
	IPv6Int.SetBytes(net.ParseIP(ip).To4())
	return IPv6Int.Int64()
}

go test

显示单元测试详细信息且指定测试方法

 go test -v data-structure/heap/btree_heap.go data-structure/heap/btree_heap_test.go -test.run TestHeap_Replace

Go 随机数

s := rand.NewSource(time.Now().UnixNano())
token := rand.New(s).Intn(1000000)

chan

https://www.cnblogs.com/followyou/p/13799845.html