Age | Commit message (Collapse) | Author | Files | Lines |
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Use a count of -1 for infinity. Ditto for Replace.
R=rsc
CC=golang-dev
http://codereview.appspot.com/1704044
Committer: Rob Pike <r@golang.org>
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This is the Replace I suggested in the review of CL 1114041.
It's true that we already have
regexp.MustCompile(regexp.QuoteMeta(old)).ReplaceAll(s, new)
but because this Replace is doing a simpler job it is
simpler to call and inherently more efficient.
I will add the bytes implementation and tests to the
CL after the strings one has been reviewed.
R=r, cw
CC=golang-dev
http://codereview.appspot.com/1731048
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R=rsc, r
CC=golang-dev
http://codereview.appspot.com/946045
Committer: Russ Cox <rsc@golang.org>
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Also improve the implementations of Equals and Compare.
R=rsc
CC=golang-dev
http://codereview.appspot.com/969047
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note that sortmain.go has been run through hg gofmt;
only the formatting of the day initializers changed.
i'm happy to revert that formatting if you'd prefer.
stop on error in doc/progs/run
R=r
CC=golang-dev
http://codereview.appspot.com/850041
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+ first use in go/doc
R=r
CC=golang-dev
http://codereview.appspot.com/781041
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gofmt -w -r 'strings.Bytes(a) -> []byte(a)' src/cmd src/pkg test/bench
gofmt -w -r 'strings.Runes(a) -> []int(a)' src/cmd src/pkg test/bench
delete unused imports
R=r
CC=golang-dev
http://codereview.appspot.com/224062
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R=rsc
CC=golang-dev
http://codereview.appspot.com/213041
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R=rsc, r, phf
CC=golang-dev
http://codereview.appspot.com/170046
Committer: Russ Cox <rsc@golang.org>
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parsing and printing to new syntax.
Use -oldparser to parse the old syntax,
use -oldprinter to print the old syntax.
2) Change default gofmt formatting settings
to use tabs for indentation only and to use
spaces for alignment. This will make the code
alignment insensitive to an editor's tabwidth.
Use -spaces=false to use tabs for alignment.
3) Manually changed src/exp/parser/parser_test.go
so that it doesn't try to parse the parser's
source files using the old syntax (they have
new syntax now).
4) gofmt -w src misc test/bench
1st set of files.
R=rsc
CC=agl, golang-dev, iant, ken2, r
http://codereview.appspot.com/180047
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xml: drop invalid characters in attribute names
when constructing struct field names.
R=rsc
CC=r
http://codereview.appspot.com/157104
Committer: Russ Cox <rsc@golang.org>
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PERFORMANCE DIFFERENCE
SUMMARY
amd64 386
2.2 GHz AMD Opteron 8214 HE (Linux) 3.0x faster 8.2x faster
3.60 GHz Intel Xeon (Linux) 2.2x faster 6.2x faster
2.53 GHz Intel Core2 Duo E7200 (Linux) 1.5x faster 4.4x faster
2.66 Ghz Intel Xeon 5150 (Mac Pro, OS X) 1.5x SLOWER 3.0x faster
2.33 GHz Intel Xeon E5435 (Linux) 1.5x SLOWER 3.0x faster
2.33 GHz Intel Core2 T7600 (MacBook Pro, OS X) 1.4x SLOWER 3.0x faster
1.83 GHz Intel Core2 T5600 (Mac Mini, OS X) none* 3.0x faster
* but yesterday I consistently saw 1.4x SLOWER.
DETAILS
2.2 GHz AMD Opteron 8214 HE (Linux)
amd64 (3x faster)
IndexByte4K 500000 3733 ns/op 1097.24 MB/s
IndexByte4M 500 4328042 ns/op 969.10 MB/s
IndexByte64M 50 67866160 ns/op 988.84 MB/s
IndexBytePortable4K 200000 11161 ns/op 366.99 MB/s
IndexBytePortable4M 100 11795880 ns/op 355.57 MB/s
IndexBytePortable64M 10 188675000 ns/op 355.68 MB/s
386 (8.2x faster)
IndexByte4K 500000 3734 ns/op 1096.95 MB/s
IndexByte4M 500 4209954 ns/op 996.28 MB/s
IndexByte64M 50 68031980 ns/op 986.43 MB/s
IndexBytePortable4K 50000 30670 ns/op 133.55 MB/s
IndexBytePortable4M 50 31868220 ns/op 131.61 MB/s
IndexBytePortable64M 2 508851500 ns/op 131.88 MB/s
3.60 GHz Intel Xeon (Linux)
amd64 (2.2x faster)
IndexByte4K 500000 4612 ns/op 888.12 MB/s
IndexByte4M 500 4835250 ns/op 867.44 MB/s
IndexByte64M 20 77388450 ns/op 867.17 MB/s
IndexBytePortable4K 200000 10306 ns/op 397.44 MB/s
IndexBytePortable4M 100 11201460 ns/op 374.44 MB/s
IndexBytePortable64M 10 179456800 ns/op 373.96 MB/s
386 (6.3x faster)
IndexByte4K 500000 4631 ns/op 884.47 MB/s
IndexByte4M 500 4846388 ns/op 865.45 MB/s
IndexByte64M 20 78691200 ns/op 852.81 MB/s
IndexBytePortable4K 100000 28989 ns/op 141.29 MB/s
IndexBytePortable4M 50 31183180 ns/op 134.51 MB/s
IndexBytePortable64M 5 498347200 ns/op 134.66 MB/s
2.53 GHz Intel Core2 Duo E7200 (Linux)
amd64 (1.5x faster)
IndexByte4K 500000 6502 ns/op 629.96 MB/s
IndexByte4M 500 6692208 ns/op 626.74 MB/s
IndexByte64M 10 107410400 ns/op 624.79 MB/s
IndexBytePortable4K 200000 9721 ns/op 421.36 MB/s
IndexBytePortable4M 100 10013680 ns/op 418.86 MB/s
IndexBytePortable64M 10 160460800 ns/op 418.23 MB/s
386 (4.4x faster)
IndexByte4K 500000 6505 ns/op 629.67 MB/s
IndexByte4M 500 6694078 ns/op 626.57 MB/s
IndexByte64M 10 107397600 ns/op 624.86 MB/s
IndexBytePortable4K 100000 28835 ns/op 142.05 MB/s
IndexBytePortable4M 50 29562680 ns/op 141.88 MB/s
IndexBytePortable64M 5 473221400 ns/op 141.81 MB/s
2.66 Ghz Intel Xeon 5150 (Mac Pro, OS X)
amd64 (1.5x SLOWER)
IndexByte4K 200000 9290 ns/op 440.90 MB/s
IndexByte4M 200 9568925 ns/op 438.33 MB/s
IndexByte64M 10 154473600 ns/op 434.44 MB/s
IndexBytePortable4K 500000 6202 ns/op 660.43 MB/s
IndexBytePortable4M 500 6583614 ns/op 637.08 MB/s
IndexBytePortable64M 20 107166250 ns/op 626.21 MB/s
386 (3x faster)
IndexByte4K 200000 9301 ns/op 440.38 MB/s
IndexByte4M 200 9568025 ns/op 438.37 MB/s
IndexByte64M 10 154391000 ns/op 434.67 MB/s
IndexBytePortable4K 100000 27526 ns/op 148.80 MB/s
IndexBytePortable4M 100 28302490 ns/op 148.20 MB/s
IndexBytePortable64M 5 454170200 ns/op 147.76 MB/s
2.33 GHz Intel Xeon E5435 (Linux)
amd64 (1.5x SLOWER)
IndexByte4K 200000 10601 ns/op 386.38 MB/s
IndexByte4M 100 10827240 ns/op 387.38 MB/s
IndexByte64M 10 173175500 ns/op 387.52 MB/s
IndexBytePortable4K 500000 7082 ns/op 578.37 MB/s
IndexBytePortable4M 500 7391792 ns/op 567.43 MB/s
IndexBytePortable64M 20 122618550 ns/op 547.30 MB/s
386 (3x faster)
IndexByte4K 200000 11074 ns/op 369.88 MB/s
IndexByte4M 100 10902620 ns/op 384.71 MB/s
IndexByte64M 10 181292800 ns/op 370.17 MB/s
IndexBytePortable4K 50000 31725 ns/op 129.11 MB/s
IndexBytePortable4M 50 32564880 ns/op 128.80 MB/s
IndexBytePortable64M 2 545926000 ns/op 122.93 MB/s
2.33 GHz Intel Core2 T7600 (MacBook Pro, OS X)
amd64 (1.4x SLOWER)
IndexByte4K 200000 11120 ns/op 368.35 MB/s
IndexByte4M 100 11531950 ns/op 363.71 MB/s
IndexByte64M 10 184819000 ns/op 363.11 MB/s
IndexBytePortable4K 500000 7419 ns/op 552.10 MB/s
IndexBytePortable4M 200 8018710 ns/op 523.06 MB/s
IndexBytePortable64M 10 127614900 ns/op 525.87 MB/s
386 (3x faster)
IndexByte4K 200000 11114 ns/op 368.54 MB/s
IndexByte4M 100 11443530 ns/op 366.52 MB/s
IndexByte64M 10 185212000 ns/op 362.34 MB/s
IndexBytePortable4K 50000 32891 ns/op 124.53 MB/s
IndexBytePortable4M 50 33930580 ns/op 123.61 MB/s
IndexBytePortable64M 2 545400500 ns/op 123.05 MB/s
1.83 GHz Intel Core2 T5600 (Mac Mini, OS X)
amd64 (no difference)
IndexByte4K 200000 13497 ns/op 303.47 MB/s
IndexByte4M 100 13890650 ns/op 301.95 MB/s
IndexByte64M 5 222358000 ns/op 301.81 MB/s
IndexBytePortable4K 200000 13584 ns/op 301.53 MB/s
IndexBytePortable4M 100 13913280 ns/op 301.46 MB/s
IndexBytePortable64M 10 222572600 ns/op 301.51 MB/s
386 (3x faster)
IndexByte4K 200000 13565 ns/op 301.95 MB/s
IndexByte4M 100 13882640 ns/op 302.13 MB/s
IndexByte64M 5 221411600 ns/op 303.10 MB/s
IndexBytePortable4K 50000 39978 ns/op 102.46 MB/s
IndexBytePortable4M 50 41038160 ns/op 102.20 MB/s
IndexBytePortable64M 2 656362500 ns/op 102.24 MB/s
R=r
CC=golang-dev
http://codereview.appspot.com/166055
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Split: fixed typo in documentation
R=rsc, r, r1
http://codereview.appspot.com/157170
Committer: Russ Cox <rsc@golang.org>
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also pick off the special case in strings.Index. don't want strings.IndexByte
because the call site will very rarely need to allocate and we can handle the
test in the code itself. bytes.IndexByte can avoid a common allocation.
R=rsc
CC=golang-dev
http://codereview.appspot.com/156091
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replace all calls with calls to copy
use copy in regexp and bytes.Buffer
R=rsc
CC=golang-dev
http://codereview.appspot.com/157073
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copy of a string or a byte array.
strings.Repeat("-", 50)
bytes.Repeat(b, 99)
R=rsc
http://codereview.appspot.com/155063
Committer: Russ Cox <rsc@golang.org>
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packages.
thanks to ulrik.sverdrup for the test case.
Fixes issue 191.
R=rsc
CC=golang-dev
http://codereview.appspot.com/155056
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rsc's algorithm
- applied gofmt -w misc src
- partial CL (remaining files in other CLs)
R=rsc, r
http://go/go-review/1024040
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R=rsc, r
http://go/go-review/1025029
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- enabled for function declarations (not just function literals)
- applied gofmt -w $GOROOT/src
(look for instance at src/pkg/debug/elf/elf.go)
R=r, rsc
CC=go-dev
http://go/go-review/1026006
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most common usage is:
lines := strings.SplitAfter(text, "\n", 0)
R=r
http://go/go-review/1018042
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R=gri
http://go/go-review/1015011
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R=gri
OCL=35485
CL=35488
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the last round omitted := range and only
checked 1 out of N vars in a multi-var :=
R=r
OCL=34624
CL=34638
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R=rsc
DELTA=83 (83 added, 0 deleted, 0 changed)
OCL=34584
CL=34584
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R=rsc
DELTA=186 (181 added, 0 deleted, 5 changed)
OCL=34203
CL=34203
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whole-package compilation. new Makefiles,
tests now in separate package
bytes
flag
fmt
io
math
once
os
reflect
strconv
sync
time
utf8
delete import "xxx" in package xxx.
inside package xxx, xxx is not declared
anymore so s/xxx.//g
delete file and package level forward declarations.
note the new internal_test.go and sync
and strconv to provide public access to
internals during testing. the installed version
of the package omits that file and thus does
not open the internals to all clients.
R=r
OCL=33065
CL=33097
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io.ByteBuffer -> bytes.Buffer
left io.ByteBuffer stub around for now,
for protocol compiler.
R=r
OCL=30861
CL=30872
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R=rsc
APPROVED=r
DELTA=131 (39 added, 10 deleted, 82 changed)
OCL=30669
CL=30723
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and return the number of bytes copied.
R=r
DELTA=18 (6 added, 0 deleted, 12 changed)
OCL=30693
CL=30712
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tests: all.bash passes, gobuild still works, godoc still works.
R=rsc
OCL=30096
CL=30102
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