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Go Λ͡ΊΔʹ͋ͨͬͯ
͓͍ͬͯͯ΄͍͠πʔϧ
2019/04/19 @golang.tokyo
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The Go gopher was designed by Renee French.
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Who?
• ެһʢࢁܗݝிʣ
→WebσβΠφʔ
→αʔόʔαΠυΤϯδχΞ
w Women Who Go Tokyoελοϑ
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ID: mom0tomo
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Women Who Go Tokyo
Go͖͕ू·ͬͯɺ݄ʹҰςʔϚֶश͍ͯ͠·͢
!3
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ΩʔΩϟοϓ൦͠·ͨ͠
ٕज़ॻయ#wwg_tokyo
!4
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͓ͬͯ͘ͱ
ʹཱͭ͜ͱ
!5
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golang.orgΛࢀর͠Α͏
!6
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golang.orgΛࢀর͠Α͏
golang.jp༰͕WҎલͳͷͰҙ͢Δ
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Gophers.slack.comʹࢀՃ͠Α͏
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Gophers.slack.comʹࢀՃ͠Α͏
https://invite.slack.golangbridge.org/
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Golang WeeklyΛಡ͏
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!11
͍ͬͯΔͱ
ศརͳπʔϧ
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Go ίϚϯυ/πʔϧ͕ॆ࣮ͯ͠
͍Δ
• go ίϚϯυ
• go tool
• ඪ४ɾ४ඪ४ύοέʔδͰఏڙ͞Ε͍ͯΔ
• IDEʹཔΒͳͯ͘շదʹ։ൃͰ͖Δ
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ڥมΛදࣔ͢Δ
$ go env
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$ go env
GOARCH="amd64"
GOBIN=""
GOCACHE="/home/alex/.cache/go-build"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/home/alex/go"
GOPROXY=""
GORACE=""
GOROOT="/usr/local/go"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
GCCGO="gccgo"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD=""
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-
build245740092=/tmp/go-build -gno-record-gcc-switches"
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$ go env GOPATH GOROOT
/Users/mom0tomo/dev/go
/usr/local/go
// ಛఆͷڥมΛൈ͖ग़ͯ͠දࣔ͢Δ
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ίʔυΛformat͢Δ
$ gofmt
$ go fmt
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$ gofmt .
$ gofmt foo.go
// Options
// -d : diffΛඪ४ग़ྗ͢Δ
// -l : ϑΝΠϧ໊Λඪ४ग़ྗ͢Δ
// -w : ্ॻ͖อଘ͢Δ
// -s : ه๏Λγϯϓϧʹ͢Δ
// Ұཡ https://godoc.org/github.com/gophersjp/go/src/cmd/gofmt
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$ go fmt .
$ go fmt foo.go
// $ gofmt -l -w ͱಉͨ͡Β͖
// formatͨ͠༰Ͱ্ॻ͖ͯ͠ϑΝΠϧ໊Λඪ४ग़ྗ͢Δ
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ίʔυΛ੩తղੳͯ͠
ଥੑΛνΣοΫ͢Δ
$ go vet
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$ go vet .
$ go vet foo.go
// ίʔυΛ੩తղੳͯ͠ه๏ΛνΣοΫ͢Δ
// ίϯύΠϥʹݕͰ͖ͳ͍ͷΛݟ͚ͭͯ͘ΕΔ
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Ϧϯλʔʹ͔͚Δ
$ golint
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$ golint .
$ golint foo.go
// ίʔυ͕Effective GoͱCodeReviewCommentsʹ
Ԋ͏͔νΣοΫ͢Δ
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Thank you!
@mom0tomo
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