tree 1ee9d96a9c4a3bf886d3ad806d2a3d8c14ee2350
parent c3f4d486298baf0f69057fc51d4b5194f8dfbfdd
author Joe Tsai <joetsai@digital-static.net> 1543281392 -0800
committer Joe Tsai <thebrokentoaster@gmail.com> 1543284844 +0000

internal/detrand: new package for deterministically random functionality

The use of math/rand in serialization is to provide some form of instability
to the output to provide a clear signal to the user that the should not
depend on the the property of stability. However, it is reasonable that users
expect the output for these to be deterministic.

As such, add a detrand package that provides deterministic, yet unstable
randomization functionality.

Since this package hashes the binary, it does impose a small initialization cost:
	Benchmark    100000    20712 ns/op    480 B/op    6 allocs/op

Change-Id: I232d0fea1789a4278079837a67ee2f63474a4364
Reviewed-on: https://go-review.googlesource.com/c/151340
Reviewed-by: Herbie Ong <herbie@google.com>