go new example
package main
import "fmt"
func main() {
var data int = 10
x := &data
fmt.Println(*x)
xx := new(int)
*xx = 10
fmt.Println(*xx)
}go new example
package main
import "fmt"
func main() {
var data int = 10
x := &data
fmt.Println(*x)
xx := new(int)
*xx = 10
fmt.Println(*xx)
}golang example
Gopack CLI is instant package downloader for Go Programming,
if you use Gopack CLI you can download your favorite package library
with very easy, just play the keyboard and select the package you need,
wait a while until your package is installed and Gopack CLI
also supports installing multiple modules at the same time.
npm i gopack-cligo make example
package main
type Foo map[string]string
type Bar struct {
s string
i int
}
func main() {
// OK:
y := new(Bar)
(*y).s = "hello"
(*y).i = 1
// NOT OK:
z := make(Bar) // compile error: cannot make type Bar
z.s = "hello"
z.i = 1
// OK:
x := make(Foo)
x["x"] = "goodbye"
x["y"] = "world"
// NOT OK:
u := new(Foo)
(*u)["x"] = "goodbye" // !!panic!!: runtime error:
// assignment to entry in nil map
(*u)["y"] = "world"
}go make example
var p *[]int = new([]int)
or
p := new([]int)go make example
func main() {
// OK:
ch := make(chan string)
go sendData(ch)
go getData(ch)
time.Sleep(1e9)
// NOT OK:
ch := new(chan string)
go sendData(ch) // cannot use ch (variable of type *chan string)
// as chan string value in argument to sendData
go getData(ch)
time.Sleep(1e9)
}
func sendData(ch chan string) {
ch <- "Washington"
ch <- "Tripoli"
ch <- "London"
ch <- "Beijing"
ch <- "Tokio"
}
func getData(ch chan string) {
var input string
for {
input = <-ch
fmt.Printf("%s ", input)
}
}Copyright © 2021 Codeinu
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