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
const vs let
Search
Yosuke Furukawa
PRO
December 09, 2015
9
1.4k
const vs let
忘年🍣
Yosuke Furukawa
PRO
December 09, 2015
Tweet
Share
More Decks by Yosuke Furukawa
See All by Yosuke Furukawa
Welcome JSConf.jp 2024
yosuke_furukawa
PRO
1
3.8k
tc39 x jsconf.jp Panel Discussion 2024
yosuke_furukawa
PRO
0
200
Removing Corepack
yosuke_furukawa
PRO
9
1.5k
JavaScript Runtime とはなにか
yosuke_furukawa
PRO
15
2.7k
Strip Types と Storage
yosuke_furukawa
PRO
4
370
Module Harmony について
yosuke_furukawa
PRO
3
1.6k
LTのやり方
yosuke_furukawa
PRO
16
2.4k
AppRouter Panel Talk
yosuke_furukawa
PRO
3
760
Node.js v22 で変わること
yosuke_furukawa
PRO
13
5.8k
Featured
See All Featured
Git: the NoSQL Database
bkeepers
PRO
429
65k
Building Better People: How to give real-time feedback that sticks.
wjessup
367
19k
Visualizing Your Data: Incorporating Mongo into Loggly Infrastructure
mongodb
45
9.4k
Faster Mobile Websites
deanohume
306
31k
GitHub's CSS Performance
jonrohan
1030
460k
Understanding Cognitive Biases in Performance Measurement
bluesmoon
27
1.6k
Product Roadmaps are Hard
iamctodd
PRO
51
11k
Build your cross-platform service in a week with App Engine
jlugia
229
18k
Put a Button on it: Removing Barriers to Going Fast.
kastner
60
3.7k
Building a Scalable Design System with Sketch
lauravandoore
462
33k
Making Projects Easy
brettharned
116
6.1k
Why Our Code Smells
bkeepers
PRO
336
57k
Transcript
ͦΖͦΖMFUWTDPOTU ʹܾணΛ͚͍ͨ !ZPTVLF@GVSVLBXB
ՄมੑΛ࠷খݶʹ͢Δ w &⒎FDUJWF+BWB w શͯͷpFMEΛpOBMQSJWBUFʹ͢Δ w Մมͳͷઐ༻ͷΞΫηεखஈΛ༻ҙ͢Δ TFUUFSΈ͍ͨͳ
ՄมੑΛಋೖ͢ΔͱԿ͕μϝ ͳͷ͔ w &⒎FDUJWF+BWB w த͕উखʹॻ͖ΘΔͷΛ͙ͨΊʹޚతί ϐʔΛ͠ͳ͖Ό͍͚ͳ͍͕࣌͋Δɻ w εϨουΞϯηʔϑ w
Ωϟογϡʹऑ͍
͡Ό͋ٯʹ+4ʹͦΕඞཁͳ ͷ͔ w த͕উखʹॻ͖ΘΔͷΛ͙ͨΊʹޚతίϐʔΛ͠ͳ͖Ό͍ ͚ͳ͍͕࣌͋Δɻ w Ұ൪͋Γͦ͏ɻ w εϨουΞϯηʔϑ w
8FC8PSLFSBOE4IBSFE"SSBZ#V⒎FSͱ͔ w Ωϟογϡʹऑ͍ w ͔֬ʹɺͰͦΜͳΩϟογϡ+4Ͱ͏ͱϝϞϦϦʔΫͷݩ ʹͳΓͦ͏ɻ
͡Ό͋ٯʹ+4ʹͦΕඞཁͳ ͷ͔ w ҙຯʢബ͍͚Ͳʣ͋Δ w εϨουηʔϑͱ͔ࠓແ͍͔ΒඍົͬͪΌඍ ົ w େن։ൃͱ͔ͳΒҙຯ͋ΔʢෆมੑͰյΕ ΔͷΛ͙ޮՌʣɻ
DPOTU͚ͩͰ͛Δͷ͔ w ແཧ w DPOTU 0CKFDUGSFF[F w .BQ4FUJNNVUBCMFKTΈ͍ͨͳίϨΫγϣ ϯϥούʔ͕ඞཁʹͳΓͦ͏
ͦ͜·ͰΔͷʁ w ͬͯͳ͍X ݱঢ়ਓମ੍ w Θ͟Θ͟GSFF[Fͪΐͬͱ໘ɻ w ·ͯ͠JNNVUBCMFKTϥΠϒϥϦʹཔΔͱ͔ ΑͬΆͲͷঢ়گɻ
͡Ό͋Δҙຯ͋Δͷʁ w ݸਓతͳΔҙຯ w ϝϞϦͷઅ w ಡΉ࣌ʹAMFUAPSAWBSA͕͋Δͱɺมߋ͢Δ Մೳੑ͕͋Δมͱͯ͠ݟͳ͍ͱ͍͚ͳ͍ɻ w ʰมߋ͕ͳ͍ʱ͍ͬͯ͏͚ͩͰಡΉ࣌ʹָ
͡Ό͋Δҙຯ͋Δͷʁ w ྑ͔ͬͨ͜ͱ͋Δ w MFU͏ͱ͖GPSจΛϒϯճ͚࣌ͩ͢ʹݶఆ͞ ͤͨ w ٯʹMFUͰGPSจΛճͦ͏ͱͯ͠ΔίʔυΛݟΔ ͱʮ͓ʁʯͬͯؾ͚ͮΔΑ͏ʹͳͬͨɻ w
GPSͰճ͢ΑΓ"SSBZNFUIPEͬͯNBQͱ͔ pMUFSͱ͔SFEVDFͰ͏·͘ॻ͚ΔͰ͠ΐͬͯͳΔ
͡Ό͋Δҙຯ͋Δͷʁ w Γ͍ͨ͜ͱDPOTUΛڧ੍ͤ͞Δ͜ͱͰ w ॳֶऀͱҰॹʹͬͨ࣌ʹ͍ͭͬͪΌ͏۪ ͳॲཧ GPSจ͙Δ͙ΔJGจͰೖ ΛݮΒ ͢ w
มߋՄೳͳঢ়ଶΛͪΐͬͱ͚ͩগͳͯ͘͠ɺಡ Ή࣌ͷίετΛݮΒ͢
MFUͷ͕DPOTUΑΓ͍͡ΌΜ w ͦΕͳʁ w ͰɺͦͦͦΜͳʹͨ͘͞Μมએݴ͠ͳ ͍ɻ w MFU͕ଟ͍ͱͦΕͦΕͰมએݴଟ͍Μ͔ͩΒ ݟͳ͓ͨ͠΄͏͕ྑ͍ͷͰʁ
DMBTTͰpOBMͱ͔࡞ΕͶʔ ͠ w ͦΕͳʁ w EFGFOTJCMFDMBTTͱ͔ߟ͑ΕͯΔΒ͍ͥ͠ w IUUQXJLJFDNBTDSJQUPSHEPLVQIQ JETUSBXNBOEFGFOTJCMF@DMBTTFT
ͷதͰͷߟ͑ w ࠓҙຯ͕ബ͍ͩΖ͏͚ͲɺࠓޙεϨουηʔ ϑͱ͔ߟ͑ͳ͖Ό͍͚ͳ͍͕࣌+4དྷΔ ʢͣʣ w DMBTTͷදݱ͕গͳ͍͚Ͳࠓޙ૿͑Δͣ w DPOTUʹ͓ͯ͘͜͠ͱͰؔܕελΠϧͷॻ͖ํ ʹ׳Ε͓ͯ͘͜ͱʹҙຯ͋Δͣ
݁ w DPOTU͓͏