mirror of
https://github.com/golang/go
synced 2024-11-22 08:44:41 -07:00
113 lines
1.5 KiB
Go
113 lines
1.5 KiB
Go
// $G $D/$F.go && $L $F.$A && ./$A.out
|
|
|
|
// Copyright 2009 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package main
|
|
|
|
var c = make(chan int)
|
|
|
|
func check(a []int) {
|
|
for i := 0; i < len(a); i++ {
|
|
n := <-c
|
|
if n != a[i] {
|
|
println("want", a[i], "got", n, "at", i)
|
|
panic("fail")
|
|
}
|
|
}
|
|
}
|
|
|
|
func f() {
|
|
var i, j int
|
|
|
|
i = 1
|
|
j = 2
|
|
f := func() {
|
|
c <- i
|
|
i = 4
|
|
g := func() {
|
|
c <- i
|
|
c <- j
|
|
}
|
|
g()
|
|
c <- i
|
|
}
|
|
j = 5
|
|
f()
|
|
}
|
|
|
|
// Accumulator generator
|
|
func accum(n int) func(int) int {
|
|
return func(i int) int {
|
|
n += i
|
|
return n
|
|
}
|
|
}
|
|
|
|
func g(a, b func(int) int) {
|
|
c <- a(2)
|
|
c <- b(3)
|
|
c <- a(4)
|
|
c <- b(5)
|
|
}
|
|
|
|
func h() {
|
|
var x8 byte = 100
|
|
var x64 int64 = 200
|
|
|
|
c <- int(x8)
|
|
c <- int(x64)
|
|
f := func(z int) {
|
|
g := func() {
|
|
c <- int(x8)
|
|
c <- int(x64)
|
|
c <- z
|
|
}
|
|
g()
|
|
c <- int(x8)
|
|
c <- int(x64)
|
|
c <- int(z)
|
|
}
|
|
x8 = 101
|
|
x64 = 201
|
|
f(500)
|
|
}
|
|
|
|
func newfunc() func(int) int { return func(x int) int { return x } }
|
|
|
|
|
|
func main() {
|
|
go f()
|
|
check([]int{1, 4, 5, 4})
|
|
|
|
a := accum(0)
|
|
b := accum(1)
|
|
go g(a, b)
|
|
check([]int{2, 4, 6, 9})
|
|
|
|
go h()
|
|
check([]int{100, 200, 101, 201, 500, 101, 201, 500})
|
|
|
|
x, y := newfunc(), newfunc()
|
|
if x == y {
|
|
println("newfunc returned same func")
|
|
panic("fail")
|
|
}
|
|
if x(1) != 1 || y(2) != 2 {
|
|
println("newfunc returned broken funcs")
|
|
panic("fail")
|
|
}
|
|
|
|
ff(1)
|
|
}
|
|
|
|
func ff(x int) {
|
|
call(func() {
|
|
_ = x
|
|
})
|
|
}
|
|
|
|
func call(func()) {
|
|
}
|