go noeq 源码
golang noeq 代码
文件路径：/test/interface/noeq.go
// run
// Copyright 2011 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 run-time error detection for interface values containing types
// that cannot be compared for equality.
package main
func main() {
cmp(1)
var (
m map[int]int
s struct{ x []int }
f func()
)
noCmp(m)
noCmp(s)
noCmp(f)
}
func cmp(x interface{}) bool {
return x == x
}
func noCmp(x interface{}) {
shouldPanic(func() { cmp(x) })
}
func shouldPanic(f func()) {
defer func() {
if recover() == nil {
panic("function should panic")
}
}()
f()
}
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