Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Fuzzy finder as a Go library
Search
ktr
May 18, 2019
Programming
3
5.9k
Fuzzy finder as a Go library
Go Conference 2019 Spring
ktr
May 18, 2019
Tweet
Share
More Decks by ktr
See All by ktr
激動の一年を通じて見えてきた「技術でリードする」ということ
ktr_0731
8
9k
Monorepo における Go テストの差分実行 / Running Differential Go Tests in a Monorepo
ktr_0731
1
180
Designing libraries in Go way
ktr_0731
7
1.5k
Go Modules and Proxy Walkthrough
ktr_0731
8
27k
ソフトウェアの複雑さに立ち向かう技術 / Tackling software complexity
ktr_0731
0
200
つよくてニューゲーム / NewGame++
ktr_0731
0
1k
やはり俺の Go アプリケーション設計はまちがっている。 / My Go Application Design Is Wrong, As I Expected
ktr_0731
13
3.6k
GopherCon2018
ktr_0731
2
1.8k
Evans: more expressive gRPC client
ktr_0731
2
500
Other Decks in Programming
See All in Programming
『Python → TypeScript』オンボーディング奮闘記
takumi_tatsuno
1
130
TypeScript を活かしてデザインシステム MCP を作る / #tskaigi_after_night
izumin5210
4
470
MLOps Japan 勉強会 #52 - 特徴量を言語を越えて一貫して管理する, 『特徴量ドリブン』な MLOps の実現への試み
taniiicom
2
560
TypeScript Language Service Plugin で CSS Modules の開発体験を改善する
mizdra
PRO
3
2.4k
ts-morph実践:型を利用するcodemodのテクニック
ypresto
1
530
Practical Domain-Driven Design - Workshop at NDC 2025
mufrid
0
130
TypeScript製IaCツールのAWS CDKが様々な言語で実装できる理由 ~他言語変換の仕組み~ / cdk-language-transformation
gotok365
7
370
バランスを見極めよう!実装の意味を明示するための型定義 TSKaigi 2025 Day2 (5/24)
whatasoda
2
770
型安全なDrag and Dropの設計を考える
yudppp
5
660
Interface vs Types ~型推論が過多推論~
hirokiomote
1
230
少数精鋭エンジニアがフルスタック力を磨く理由 -そしてAI時代へ-
rebase_engineering
0
130
Efficiency and Rock 'n’ Roll (Really!)
hollycummins
0
590
Featured
See All Featured
What’s in a name? Adding method to the madness
productmarketing
PRO
22
3.5k
The Illustrated Children's Guide to Kubernetes
chrisshort
48
50k
The Pragmatic Product Professional
lauravandoore
35
6.7k
Product Roadmaps are Hard
iamctodd
PRO
53
11k
Speed Design
sergeychernyshev
30
970
The Invisible Side of Design
smashingmag
299
50k
Music & Morning Musume
bryan
47
6.5k
GraphQLの誤解/rethinking-graphql
sonatard
71
11k
Stop Working from a Prison Cell
hatefulcrawdad
269
20k
Gamification - CAS2011
davidbonilla
81
5.3k
Put a Button on it: Removing Barriers to Going Fast.
kastner
60
3.9k
Fashionably flexible responsive web design (full day workshop)
malarkey
407
66k
Transcript
BU(P$POGFSFODF4QSJOH Fuzzy finder as a Go library
XIPBNJ w LUS Ωλϩʔɺ!LUS@ w ৽ଔ w (Pͱ$-*πʔϧ͕͖͢
None
'V[[ZpOEFSJTԿ
wೖྗʹର͠ɺ͍͋·͍ݕࡧ ʹΑͬͯΠϯλϥΫςΟϒʹ ಛఆͷߦΛબͰ͖Δ wίϚϯυϥΠϯGV[[ZpOEFS G[G G[Z FUD 'V[[ZpOEFS
$ cd `ghq root`/`ghq list | fzf` HIRԼͷϦϙδτϦʹҠಈ
$ git branch | egrep -v '^\*' | fzf |
xargs git checkout ΠϯλϥΫςΟϒʹνΣοΫΞτઌ ϒϥϯνΛબ
ίϚϯυϥΠϯGV[[ZpOEFSΛ ѻ͏ࡍʹൃੜ͢Δ
w ߦࢦͰ͋ΔͨΊɺؚΊΒΕΔใྔʹ੍ݶ͕͋Δ w πʔϧʹΈࠐΉࡍͷෳࡶ͞ ίϚϯυϥΠϯGV[[ZpOEFS Λѻ͏ࡍʹൃੜ͢Δ
w ߦࢦͰ͋ΔͨΊɺؚΊΒΕΔใྔʹ੍ݶ͕͋Δ w πʔϧʹΈࠐΉࡍͷෳࡶ͞ ίϚϯυϥΠϯGV[[ZpOEFS Λѻ͏ࡍʹൃੜ͢Δ
None
None
None
w શ͘ಉ͡༰Λද͍ࣔͯ͠Δߦ͕ෳ͋Δͱ͖ɺ ϓϩάϥϜతɺϢʔβతʹͦΕΒΛ۠ผͰ͖ͳ͍ w ใྔΛ૿͢͜ͱͰϢχʔΫʹͰ͖Δ͕ʜ w ͱʹ͔͘ݟͮΒ͍ w ิॿతͳใݕࡧରʹͳΓɺݕࡧਫ਼͕Լ͢Δ ߦࢦͷݶք
w ߦࢦͰ͋ΔͨΊɺؚΊΒΕΔใྔʹ੍ݶ͕͋Δ w πʔϧʹΈࠐΉࡍͷෳࡶ͞ ίϚϯυϥΠϯGV[[ZpOEFS Λѻ͏ࡍʹൃੜ͢Δ
w DEίϚϯυͷ֦ு w ύεͷཤྺΛΠϯλϥΫςΟϒʹબͯ͠Ҡಈ CCSFOIBODE
w J5VOFTΛίϚϯυϥΠϯ͔Βૢ࡞Ͱ͖Δ w J5VOFTͷۂΛΠϯλϥΫςΟϒʹબɺ࠶ੜ LUSJUVOFTDMJ
w ίϚϯυϥΠϯGV[[ZpOEFSͷΠϯετʔϧ w πʔϧʹೝࣝͤ͞ΔͨΊͷઃఆ w ڥมͳͲ πʔϧʹΈࠐΉࡍͷෳࡶ͞
'V[[ZpOEFSΛϥΠϒϥϦ ͱͯ͠ఏڙ͢Δ
w ߦࢦͰ͋ΔͨΊɺؚΊΒΕΔใྔʹ੍ݶ͕͋Δ ‣ ෦తʹঢ়ଶΛ࣋ͭ͜ͱ͕Ͱ͖ɺϓϩάϥϜଆͰॏෳߦ Λ۠ผͰ͖Δ w πʔϧʹΈࠐΉࡍͷෳࡶ͞ ‣ (PʹͷΈґଘ͢ΔͨΊɺͦͦπʔϧͷઃఆ͕ෆཁ 'V[[ZpOEFSBTBMJCSBSZ
LUSHPGV[[ZpOEFS
func Find( slice interface{}, itemFunc func(i int) string, opts ...Option,
) (idx int, err error) LUSHPGV[[ZpOEFS
EFNP
EFNP ίϚϯυϥΠϯGV[[ZpOEFS
func main() { var slice []string s := bufio.NewScanner(os.Stdin) for
s.Scan() { slice = append(slice, s.Text()) } idx, err := fuzzyfinder.Find(slice, func(i int) string { return slice[i] }) if err != nil { fmt.Fprintf(os.Stderr, "failed to find: %s\n", err) os.Exit(1) } fmt.Println(slice[idx]) }
$ (cd $GOPATH/src/github.com/golang/go; git ls-files) | ./cli
EFNP ಉҰ༰ͷߦͷදࣔ
w ϓϩάϥϜࣗॏෳߦͷผ͕Ͱ͖Δ͕ɺ ϢʔβવผͰ͖ͳ͍ w ิॿతͳใΛϓϨϏϡʔΠϯυͰදࣔ ಉҰ༰ͷߦͷදࣔ
func main() { idx, err := fuzzyfinder.FindMulti(songs, func(i int) string
{ return songs[i].Title }, fuzzyfinder.WithPreviewWindow(func(i, w, h int) string { if i == -1 { return "" } return fmt.Sprintf( "Title: %s\nArtist: %s\nAlbum: %s\n", songs[i].Title, songs[i].ArtistName, songs[i].AlbumName) })) if err != nil { fmt.Fprintf(os.Stderr, "failed to find: %s\n", err) os.Exit(1) } for _, i := range idx { fmt.Println(fmt.Sprintf( "%s / %s / %s", songs[i].Title, songs[i].ArtistName, songs[i].AlbumName)) } }
$ ./orange
HPGV[[ZpOEFSͷ࣮
w ೖྗͱީิߦͷϚονϯά w Ϛονͨ͠ߦͷείΞϦϯά 'V[[ZpOEFSΛߏ͢Δཁૉ
w ೖྗlHSQDzΛؚΉߦΛ୳͢ w ۪ʹೋॏϧʔϓճ͚ͩ͢ Ϛονϯά
w ظ͍ͯ͠ΔߦΛ༏ઌతʹදࣔ͢ΔͨΊʹඞཁ w ֤ߦΛιʔτ͢ΔͨΊͷείΞΛࢉग़͢Δ είΞϦϯά
w ϨʔϕϯγϡλΠϯڑ w /FFEMFNBO8VOTDI w 4NJUI8BUFSNBO ৭ʑͳείΞϦϯάΞϧΰϦζϜ
w ϨʔϕϯγϡλΠϯڑεϖϧνΣοΧʔ w /FFEMFNBO8VOTDIG[Z w 4NJUI8BUFSNBOG[G ৭ʑͳείΞϦϯάΞϧΰϦζϜ
w ϨʔϕϯγϡλΠϯڑ w /FFEMFNBO8VOTDI w 4NJUI8BUFSNBO ৭ʑͳείΞϦϯάΞϧΰϦζϜ
w άϩʔόϧ ΞϥΠϯϝϯτΞϧΰϦζϜͷҰͭ w ͋ΔͭͷจࣈྻΛྻͤ͞ΔͨΊʹ ඞཁͳίετΛಈతܭը๏ΛͬͯٻΊΔ /FFEMFNBO8VOTDIΞϧΰϦζϜ
/FFEMFNBO8VOTDIΞϧΰϦζϜ | A T A C ------------------------- | A| C|
w ҎԼͷ͍ͣΕ͔ͷૢ࡞ͷ͏ͪɺ࠷είΞ͕ߴ͍ͷΛબ w ۭന Ϊϟοϓ ΛࠨͷจࣈྻʹҰͭૠೖ w ۭന Ϊϟοϓ Λ্ͷจࣈྻʹҰͭૠೖ
w จࣈͱจࣈͷରԠ͚ ϚονPSϛεϚον /FFEMFNBO8VOTDIΞϧΰϦζϜ
w ҎԼͷ͍ͣΕ͔ͷૢ࡞ͷ͏ͪɺ࠷είΞ͕ߴ͍ͷΛબ w ۭന Ϊϟοϓ ΛࠨͷจࣈྻʹҰͭૠೖ w ۭന Ϊϟοϓ Λ্ͷจࣈྻʹҰͭૠೖ
w จࣈͱจࣈͷରԠ͚ ϚονPSϛεϚον PS /FFEMFNBO8VOTDIΞϧΰϦζϜ
/FFEMFNBO8VOTDIΞϧΰϦζϜ ยํ͕ۭจࣈͷͱ͖ͷ είΞ࠷ॳʹٻ·Δ | A T A C ------------------------- |
0 -2 -4 -6 -8 A| -2 C| -4
/FFEMFNBO8VOTDIΞϧΰϦζϜ e.g. “ATAC” ʹରͯ͠ “” ΛΞϥ Πϯϝϯτ͢Δʹ 4 ͭ
ΪϟοϓΛૠೖ͢Εྑ͍ | A T A C ------------------------- | 0 -2 -4 -6 -8 A| -2 C| -4
/FFEMFNBO8VOTDIΞϧΰϦζϜ “” ͱ “” ʹͦΕͧΕ จࣈΛରԠ͚Δ߹ɺ Ϛον͍ͯ͠ΔͷͰ +2 (0 +
2 = 2) | A T A C ------------------------- | 0 -2 -4 -6 -8 A| -2 C| -4
/FFEMFNBO8VOTDIΞϧΰϦζϜ “A” ͱ “” ͕͋Γɺ ޙऀʹΪϟοϓΛૠೖ ͢ΔͷͰ -2 (-2 -
2 = -4) | A T A C ------------------------- | 0 -2 -4 -6 -8 A| -2 C| -4
/FFEMFNBO8VOTDIΞϧΰϦζϜ “” ͱ “A” ͕͋Γɺ લऀʹΪϟοϓΛૠೖ ͢ΔͷͰ -2 (-2 -
2 = -4) | A T A C ------------------------- | 0 -2 -4 -6 -8 A| -2 C| -4
/FFEMFNBO8VOTDIΞϧΰϦζϜ match = 2 left gap = -4 top gap
= -4 Ͳ͔͜ΒٻΊ͔ͨΛه | A T A C ------------------------- | 0 -2 -4 -6 -8 A| -2 2 C| -4
/FFEMFNBO8VOTDIΞϧΰϦζϜ mismatch = -3 left gap = 0 top gap
= -6 | A T A C ------------------------- | 0 -2 -4 -6 -8 A| -2 2 0 C| -4
/FFEMFNBO8VOTDIΞϧΰϦζϜ match = -2 left gap = -2 top gap
= -8 | A T A C ------------------------- | 0 -2 -4 -6 -8 A| -2 2 0 -2 C| -4
/FFEMFNBO8VOTDIΞϧΰϦζϜ mismatch = -7 left gap = -4 top gap
= -10 | A T A C ------------------------- | 0 -2 -4 -6 -8 A| -2 2 0 -2 -4 C| -4
| A T A C ------------------------- | 0 -2 -4
-6 -8 A| -2 2 0 -2 -4 C| -4 0 1 -1 0 /FFEMFNBO8VOTDIΞϧΰϦζϜ ࠷ऴతͳঢ়ଶ
| A T A C ------------------------- | 0 -2 -4
-6 -8 A| -2 2 0 -2 -4 C| -4 0 1 -1 0 /FFEMFNBO8VOTDIΞϧΰϦζϜ ඌͷείΞ͕ ͜ͷจࣈྻؒͷείΞ είΞ = 0
| A T A C ------------------------- | 0 -2 -4
-6 -8 A| -2 2 0 -2 -4 C| -4 0 1 -1 0 /FFEMFNBO8VOTDIΞϧΰϦζϜ A T A C | | A - - C ඌ͔ΒҹͷॱʹḷΔ
w ϨʔϕϯγϡλΠϯڑ w /FFEMFNBO8VOTDI w 4NJUI8BUFSNBO ৭ʑͳείΞϦϯάΞϧΰϦζϜ
w ϩʔΧϧΞϥΠϯϝϯτΞϧΰϦζϜͷҰͭ w શମతʹࣅ͍ͯͳ͍ͭͷจࣈྻͷ ہॴతͳΞϥΠϯϝϯτΛٻΊΔΞϧΰϦζϜ w /FFEMFNBO8VTDIͱඇৗʹࣅ͍ͯΔ͕ɺ είΞ͕ϚΠφεʹͳΒͳ͍ 4NJUI8BUFSNBOΞϧΰϦζϜ
4NJUI8BUFSNBOΞϧΰϦζϜ w ҎԼͷ͍ͣΕ͔ͷૢ࡞ͷ͏ͪɺ࠷είΞ͕ߴ͍ͷΛબ w ۭന Ϊϟοϓ ΛࠨͷจࣈྻʹҰͭૠೖ w ۭന Ϊϟοϓ
Λ্ͷจࣈྻʹҰͭૠೖ w จࣈͱจࣈͷରԠ͚ ϚονPSϛεϚον w θϩ
| A T A C ------------------------- | 0 0 0
0 0 A| 0 2 0 2 0 C| 0 0 1 0 4 4NJUI8BUFSNBOΞϧΰϦζϜ ඌ͔Βઌ಄Ͱͳ͘ɺ ෦తͳΞϥΠϯϝϯτ (ඌ͔Β 0 ·Ͱ)
| A T A C ------------------------- | 0 0 0
0 0 A| 0 2 0 2 0 C| 0 0 1 0 4 4NJUI8BUFSNBOΞϧΰϦζϜ είΞ = 4
| A T A C ------------------------- | 0 0 0
0 0 A| 0 2 0 2 0 C| 0 0 1 0 4 4NJUI8BUFSNBOΞϧΰϦζϜ A T A C | | - - A C
w ΪϟοϓΛ࡞Δ͜ͱࣗମͷϖφϧςΟ w ઌ಄ҰகϘʔφε w FUD ϘʔφεͱϖφϧςΟ
w ઃܭͦΕͧΕͷ࣮ʹΑΔ w G[ZKIBXUIPSOG[Z"-(03*5).NE w G[GKVOFHVOOG[GTSDBMHPBMHPHP ϘʔφεͱϖφϧςΟ
·ͱΊ
ೖྗʹϚον͢ΔߦΛߜΓࠐΉ 4NJUI8BUFSNBOͰ֤ߦΛείΞϦϯά είΞ͕ߴ͍ͷ͔Βॱʹදࣔ HPGV[[ZpOEFSͷ࣮
w ॏෳߦͷ۠ผ w ϓϨϏϡʔΠϯυͰͷิॿతͳใͷ༩ w πʔϧ͔ΒGV[[ZpOEFSΛͭ͘Δࡍʹɺ ίϚϯυϥΠϯGV[[ZpOEFSͷґଘΛղফͰ ͖Δ HPGV[[ZpOEFSͷղܾ͢Δ͜ͱ
5IBOLTGPSMJTUFOJOH