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math/rand: add a Uint64 method #4254

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gopherbot opened this issue Oct 17, 2012 · 7 comments
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math/rand: add a Uint64 method #4254

gopherbot opened this issue Oct 17, 2012 · 7 comments
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Go1.8

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@gopherbot
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by jacobsa@google.com:

The Rand interface has methods for several types of random integers, including
uint32 and int63, but no uint64. I need random integers in [0, 2^64). I can of
course use two calls to Uint32 to do what I need, but see discussion here:

    https://groups.google.com/group/golang-nuts/browse_thread/thread/2a57bcef8953d44a/335e3adb37bb4333

It would be nice to add this for 2.0, or whenever it's next okay to make a
break with the current API.
@minux
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minux commented Oct 17, 2012

Comment 1:

Labels changed: added priority-later, removed priority-triage, go1.1.

Status changed to Accepted.

@rsc
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rsc commented Jul 30, 2013

Comment 2:

Labels changed: added go2.

@rsc
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rsc commented Dec 4, 2013

Comment 3:

Labels changed: added repo-main.

@rsc
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rsc commented Mar 3, 2014

Comment 4:

Labels changed: added release-none.

@gopherbot gopherbot added accepted v2 A language change or incompatible library change labels Mar 3, 2014
@rsc rsc added this to the Unplanned milestone Apr 10, 2015
@gopherbot
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CL https://golang.org/cl/27253 mentions this issue.

@chris-martin
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Some workarounds, for the convenience of anyone like me who stumbled on this issue: https://stackoverflow.com/questions/39756133/how-do-you-generate-a-random-uint64-in-go/

@bradfitz bradfitz modified the milestones: Go1.8, Unplanned Sep 30, 2016
@bradfitz bradfitz removed the v2 A language change or incompatible library change label Sep 30, 2016
@gopherbot
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CL https://golang.org/cl/33456 mentions this issue.

gopherbot pushed a commit that referenced this issue Nov 23, 2016
@rsc
math/rand: export Source64, mainly for documentation value
3f69822 
There is some code value too: types intending to implement
Source64 can write a conversion confirming that.

For #4254 and the Go 1.8 release notes.

Change-Id: I7fc350a84f3a963e4dab317ad228fa340dda5c66
Reviewed-on: https://go-review.googlesource.com/33456
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
@golang golang locked and limited conversation to collaborators Nov 23, 2017
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