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Martin Möhrmann 033e3e106e fmt: optimize %x and %X formatting for byte slices and strings
No extra buffering is needed to save the encoding
since the left padding can be computed and written out
before the encoding is generated.

Add extra tests to both string and byte slice formatting.

name                old time/op  new time/op  delta
SprintfHexString-2   410ns ± 3%   194ns ± 3%  -52.60%  (p=0.000 n=20+19)
SprintfHexBytes-2    431ns ± 3%   202ns ± 2%  -53.13%  (p=0.000 n=18+20)

Change-Id: Ibca4316427c89f834e4faee61614493c7eedb42b
Reviewed-on: https://go-review.googlesource.com/20097
Run-TryBot: Rob Pike <r@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2016-03-03 08:25:28 +00:00
.github doc: add issue and pull request templates 2016-02-26 03:16:55 +00:00
api go/types: rename Importer2 to ImporterFrom 2016-01-13 23:40:13 +00:00
doc doc: add link to 1.6 release notes on golang.org/project page 2016-03-03 01:11:02 +00:00
lib/time misc: update timezone database to IANA 2016a 2016-02-03 03:14:59 +00:00
misc misc/cgo/test: rewrite windows version of mysleep 2016-03-02 23:33:32 +00:00
src fmt: optimize %x and %X formatting for byte slices and strings 2016-03-03 08:25:28 +00:00
test Merge branch 'dev.ssa' into mergebranch 2016-03-01 12:50:17 -08:00
.gitattributes
.gitignore .gitignore: ignore src/go/build/zcgo.go 2016-02-24 04:25:46 +00:00
AUTHORS A+C: manual updates 2016-01-08 06:02:39 +00:00
CONTRIBUTING.md
CONTRIBUTORS A+C: manual updates 2016-01-08 06:02:39 +00:00
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