mirror of
https://github.com/golang/go
synced 2024-11-22 05:04:40 -07:00
0b477ef17e
X ,s;^// \$G (\$D/)?\$F\.go *$;// compile;g X ,s;^// \$G (\$D/)?\$F\.go && \$L \$F\.\$A *$;// build;g X ,s;^// \$G (\$D/)?\$F\.go && \$L \$F\.\$A && \./\$A\.out *$;// run;g X ,s;^// errchk \$G( -e)? (\$D/)?\$F\.go *$;// errorcheck;g R=golang-dev, bradfitz CC=golang-dev https://golang.org/cl/5656082
55 lines
812 B
Go
55 lines
812 B
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.
|
|
|
|
package main
|
|
|
|
// Test that dynamic interface checks treat byte=uint8
|
|
// and rune=int or rune=int32.
|
|
|
|
func main() {
|
|
var x interface{}
|
|
|
|
x = byte(1)
|
|
switch x.(type) {
|
|
case uint8:
|
|
// ok
|
|
default:
|
|
println("byte != uint8")
|
|
}
|
|
|
|
x = uint8(2)
|
|
switch x.(type) {
|
|
case byte:
|
|
// ok
|
|
default:
|
|
println("uint8 != byte")
|
|
}
|
|
|
|
rune32 := false
|
|
x = rune(3)
|
|
switch x.(type) {
|
|
case int:
|
|
// ok
|
|
case int32:
|
|
// must be new code
|
|
rune32 = true
|
|
default:
|
|
println("rune != int and rune != int32")
|
|
}
|
|
|
|
if rune32 {
|
|
x = int32(4)
|
|
} else {
|
|
x = int(5)
|
|
}
|
|
switch x.(type) {
|
|
case rune:
|
|
// ok
|
|
default:
|
|
println("int (or int32) != rune")
|
|
}
|
|
}
|