go alias1 源码
golang alias1 代码
文件路径：/test/alias1.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 that dynamic interface checks treat byte=uint8
// and rune=int or rune=int32.
package main
func main() {
var x interface{}
x = byte(1)
switch x.(type) {
case uint8:
// ok
default:
panic("byte != uint8")
}
x = uint8(2)
switch x.(type) {
case byte:
// ok
default:
panic("uint8 != byte")
}
rune32 := false
x = rune(3)
switch x.(type) {
case int:
// ok
case int32:
// must be new code
rune32 = true
default:
panic("rune != int and rune != int32")
}
if rune32 {
x = int32(4)
} else {
x = int(5)
}
switch x.(type) {
case rune:
// ok
default:
panic("int (or int32) != rune")
}
}
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