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Keith Randall 2333c6299f runtime: use old capacity to decide on append growth regime 
We grow the backing store on append by 2x for small sizes and 1.25x
for large sizes. The threshold we use for picking the growth factor
used to depend on the old length, not the old capacity. That's kind of
unfortunate, because then doing append(s, 0, 0) and append(append(s,
0), 0) do different things. (If s has one more spot available, then
the former expression chooses its growth based on len(s) and the
latter on len(s)+1.)  If we instead use the old capacity, we get more
consistent behavior. (Both expressions use len(s)+1 == cap(s) to
decide.)

Fixes #41239

Change-Id: I40686471d256edd72ec92aef973a89b52e235d4b
Reviewed-on: https://go-review.googlesource.com/c/go/+/257338
Trust: Keith Randall <khr@golang.org>
Trust: Josh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2020-09-25 03:59:54 +00:00
.github .github: add link to questions in ISSUE_TEMPLATE 2020-01-06 17:05:31 +00:00
api text/template: add CommentNode to template parse tree 2020-08-28 21:45:12 +00:00
doc spec: better variable name for operator example 2020-09-24 20:41:14 +00:00
lib/time lib/time, time/tzdata: update tz data to 2020a 2020-04-30 08:07:39 +00:00
misc all: add GOOS=ios 2020-09-23 18:12:59 +00:00
src runtime: use old capacity to decide on append growth regime 2020-09-25 03:59:54 +00:00
test runtime: use old capacity to decide on append growth regime 2020-09-25 03:59:54 +00:00
.gitattributes all: treat all files as binary, but check in .bat with CRLF 2020-06-08 15:31:43 +00:00
.gitignore
AUTHORS A+C: add Kush Patel (corporate CLA for Hootsuite Inc) 2020-07-08 00:10:44 +00:00
CONTRIBUTING.md
CONTRIBUTORS CONTRIBUTORS: update for the Go 1.15 release 2020-08-10 21:51:48 +00:00
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SECURITY.md SECURITY.md: update go versions 2019-09-26 15:34:57 +00:00

README.md

The Go Programming Language

Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.

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