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// $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 (
        nf      int
        x, y, z = f(), f(), f()
        m       = map[string]string{"a": "A"}
        a, aok  = m["a"]
        b, bok  = m["b"]
)

func look(s string) (string, bool) {
        x, ok := m[s]
        return x, ok
}

func f() int {
        nf++
        return nf
}

func main() {
        if nf != 3 || x != 1 || y != 2 || z != 3 {
                println("nf=", nf, " x=", x, " y=", y)
                panic("fail")
        }
        if a != "A" || aok != true || b != "" || bok != false {
                println("a=", a, " aok=", aok, " b=", b, " bok=", bok)
                panic("fail")
        }
}