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Functions in JavaScript
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chikoski
December 22, 2017
Technology
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Functions in JavaScript
chikoski
December 22, 2017
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Transcript
関数の話 @chikoski
function宣言と アロー関数式 GVODUJPOJE WBMVF \ SFUVSOWBMVF ^ DPOTUJE WBMVF \
SFUVSOWBMVF ^ DPOTUJEWBMVFWBMVF
関数適用 DPOTUBEE B C B C BEE BEEӕ
Ӽ㊉⇹ BEE BEEӕ Ӽ㊉⇹ BEE BEE BEE BEEӕ Ӓ Ӽ㊉⇹ӁѬ ᒉӳӶӉ ӼBEEӼ㊉⇹
パイプライン演算子 DPOTUEPVCMFOO DPOTUBEE0OFOO DPOTUNPE B C BC DPOTUWBMVF
NPE BEE0OF EPVCMF WBMVF]EPVCMF ]BEE0OF ] ONPE O https://github.com/tc39/proposal-pipeline-operator
関数適用は遅い DPOTUWBMVF NPE BEE0OF EPVCMF DPOTUWBMVF
末尾呼び出し GVODUJPOBEE B C \ SFUVSOB C ^ GVODUJPOBEE0OF B
\ SFUVSOBEE B ^ BEE0OF
末尾呼び出し GVODUJPOBEE B C \ DPOTUDB C SFUVSOD ^ GVODUJPOBEE0OF
B \ DPOTUCBEE B SFUVSOC ^ BEE0OF
ؔɿखଓ͖ͷྻʹ໊લΛ͚ͭͨͷ GVODUJPOQPXFS B \ GPS MFUJJBB \ BB B ^
SFUVSOB ^
関数はオブジェクト GVODUJPODSFBUF*E \ SFUVSOGVODUJPO WBMVF \ SFUVSOWBMVF ^ ^ DPOTUDSFBUF*E
WBMVFWBMVF
クロージャ GVODUJPOBEE4PNF WBMVF \ SFUVSOGVODUJPO B \ SFUVSOB WBMVF ^
^ DPOTUBEE4PNF WBMVFBB WBMVF DPOTUBEEBEE4PNF BEE
部分適用 DPOTUBEE B C B C DPOTUBEE4PNFBCBEE B C
DPOTUBEEBEE4PNF BEE C ӒҮҰ㕉ᡔҶӑҷӵ ᐠᡔӘक㋚ӕ㕉ᡔҶ㊉⇹ҿӶӐҮӵӒӬӶӵ BEE
部分適用の利用例 DPOTUEPN UBH BUUST\^ \ DPOTUFM EPDVNFOUDSFBUF&MFNFOU UBH GPS
DPOTULFZJOBUUST \ FMTFU"UUSJCVUF LFZ BUUST<LFZ> ^ SFUVSOFM ^
部分適用の利用例 DPOTUEJW BUUST\^ EPN EJW BUUST DPOTUBVEJP
BUUST\^ EPN BVEJP BUUST DPOTUGJMF BUUST\^ \ BUUSTUZQFGJMF SFUVSOEPN JOQVU BUUST ^
ロジックの パラメータ化 DPOTUGJOE&WFO/VNCFSTMJTU\ DPOTUSFTVMU<> GPS DPOTUOVNPGMJTU \ JG OVN \
SFTVMUQVTI OVN ^ ^ ^ DPOTUMJTU"< > DPOTUMJTU#GJOE&WFO/VNCFST MJTU" < >
ロジックの パラメータ化 DPOTUGJOE MJTU G \ DPOTUSFTVMU<> GPS DPOTUOVNPGMJTU \
JG G OVN \ SFTVMUQVTI OVN ^ ^ ^ DPOTUMJTU"< > DPOTUMJTU#GJOE JJ < >
部分適用 DPOTUGJOE MJTU G \ DPOTUSFTVMU<> GPS DPOTUOVNPGMJTU \ JG
G OVN \ SFTVMUQVTI OVN ^ ^ ^ DPOTU'JOEFSGMJTUGJOE G MJTU DPOTUG'JOEFS JJ GJOE MJTU JJ
画面に描かれるキャラ DMBTT&OFNZ\ DPOTUSVDUPS QPTJUJPO DPMMJEFS SFOEFSFS \ UIJTQPTJUJPOQPTJUJPO
UIJTDPMMJEFSDPMMJEFS UIJTSFOEFSFSSFOEFSFS ^ ^
Renderer & Collider DPOTUSFOEFSFS'BDUPSZ J DY Q DYESBX*NBHF QY QZ
J DPOTUDJSDMF$PMMJEFS S Q Q EJTU Q Q S DPOTUSSFOEFSFS'BDUPSZ JNH DPOTUDDJSDMF$PMMJEFS DPOTUJOTUBODF'BDUPSZ LMBTTQOFXLMBTT Q S D DPOTUFOFNZ'BDUPSZJOTUBODF'BDUPSZ &OFNZ DPOTUFFOFNZ'BDUPSZ OFX1PTJUJPO