diff options
author | Alberto Donizetti <alb.donizetti@gmail.com> | 2020-02-21 11:48:13 +0100 |
---|---|---|
committer | Emmanuel Odeke <emm.odeke@gmail.com> | 2020-02-24 01:59:55 +0000 |
commit | ec4c9db21015cf53661661b95b19110ed71dd49d (patch) | |
tree | 8e03c91c37bb9d700483a4b56f8d38516c8c3c69 /src/hash | |
parent | 402ea9e4f9ddcd2ed595ac12ce1b4e39f82e128f (diff) | |
download | go-ec4c9db21015cf53661661b95b19110ed71dd49d.tar.gz go-ec4c9db21015cf53661661b95b19110ed71dd49d.zip |
hash/maphash: add package-level example
Change-Id: I05c7ca644410822a527e94a7a8b883a0f8b0a4ad
Reviewed-on: https://go-review.googlesource.com/c/go/+/220420
Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
Diffstat (limited to 'src/hash')
-rw-r--r-- | src/hash/maphash/example_test.go | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/src/hash/maphash/example_test.go b/src/hash/maphash/example_test.go new file mode 100644 index 0000000000..78690fd65d --- /dev/null +++ b/src/hash/maphash/example_test.go @@ -0,0 +1,37 @@ +// 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()) +} |