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// Copyright 2020 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 maphash_test
import (
"fmt"
"hash/maphash"
)
func Example() {
// The zero Hash value is valid and ready to use; setting an
// initial seed is not necessary.
var h maphash.Hash
// Add a string to the hash, and print the current hash value.
h.WriteString("hello, ")
fmt.Printf("%#x\n", h.Sum64())
// Append additional data (in the form of a byte array).
h.Write([]byte{'w', 'o', 'r', 'l', 'd'})
fmt.Printf("%#x\n", h.Sum64())
// Reset discards all data previously added to the Hash, without
// changing its seed.
h.Reset()
// Use SetSeed to create a new Hash h2 which will behave
// identically to h.
var h2 maphash.Hash
h2.SetSeed(h.Seed())
h.WriteString("same")
h2.WriteString("same")
fmt.Printf("%#x == %#x\n", h.Sum64(), h2.Sum64())
}