mirror of
https://github.com/golang/go.git
synced 2025-11-04 02:30:57 +00:00
91 lines
1.5 KiB
Go
91 lines
1.5 KiB
Go
// run
|
|
|
|
// 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.
|
|
|
|
// Test functions and goroutines.
|
|
|
|
package main
|
|
|
|
func caller(f func(int, int) int, a, b int, c chan int) {
|
|
c <- f(a, b)
|
|
}
|
|
|
|
func gocall(f func(int, int) int, a, b int) int {
|
|
c := make(chan int)
|
|
go caller(f, a, b, c)
|
|
return <-c
|
|
}
|
|
|
|
func call(f func(int, int) int, a, b int) int {
|
|
return f(a, b)
|
|
}
|
|
|
|
func call1(f func(int, int) int, a, b int) int {
|
|
return call(f, a, b)
|
|
}
|
|
|
|
var f func(int, int) int
|
|
|
|
func add(x, y int) int {
|
|
return x + y
|
|
}
|
|
|
|
func fn() func(int, int) int {
|
|
return f
|
|
}
|
|
|
|
var fc func(int, int, chan int)
|
|
|
|
func addc(x, y int, c chan int) {
|
|
c <- x+y
|
|
}
|
|
|
|
func fnc() func(int, int, chan int) {
|
|
return fc
|
|
}
|
|
|
|
func three(x int) {
|
|
if x != 3 {
|
|
println("wrong val", x)
|
|
panic("fail")
|
|
}
|
|
}
|
|
|
|
var notmain func()
|
|
|
|
func emptyresults() {}
|
|
func noresults() {}
|
|
|
|
var nothing func()
|
|
|
|
func main() {
|
|
three(call(add, 1, 2))
|
|
three(call1(add, 1, 2))
|
|
f = add
|
|
three(call(f, 1, 2))
|
|
three(call1(f, 1, 2))
|
|
three(call(fn(), 1, 2))
|
|
three(call1(fn(), 1, 2))
|
|
three(call(func(a, b int) int { return a + b }, 1, 2))
|
|
three(call1(func(a, b int) int { return a + b }, 1, 2))
|
|
|
|
fc = addc
|
|
c := make(chan int)
|
|
go addc(1, 2, c)
|
|
three(<-c)
|
|
go fc(1, 2, c)
|
|
three(<-c)
|
|
go fnc()(1, 2, c)
|
|
three(<-c)
|
|
go func(a, b int, c chan int) { c <- a+b }(1, 2, c)
|
|
three(<-c)
|
|
|
|
emptyresults()
|
|
noresults()
|
|
nothing = emptyresults
|
|
nothing()
|
|
nothing = noresults
|
|
nothing()
|
|
}
|