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Swiftのポイントかいつまみ!
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jollyjoester
August 08, 2015
Education
2
660
Swiftのポイントかいつまみ!
個人的に大事だと思うSwiftのポイントかいつまみます。
jollyjoester
August 08, 2015
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Transcript
Swift2.0͕ग़Δલʹ SwiftͷϙΠϯτ͔͍ͭ·Έʂ SwiftϏΪφʔζษڧձ ୈ̕ճ 2015/08/08 jollyjoester
• ࣣౡҒ೭ʢͳͳ͠·ͻͰΏ͖ʣ • Repro.Inc / ྑΤϯδχΞ • iPhone / Android
• Java -> Objective-C -> Swift • ੜ·Εਆಸɺݩઍ༿ɺ ࣗࢁޱ
https://repro.io/
Repro
ࣥචʹࢀՃ͠·ͨ͠ʂ • 2015/04/10ɹٕज़ධ͔ࣾΒൃച ೦ͳ͕ΒSwift1.1࣌ Ͱਖ਼ޡදͱαϯϓϧϓϩάϥϜSwift1.2ରԠ
Introduction • ݸਓతʹେࣄͩͱࢥ͏SwiftͷϙΠϯτ͔͍ͭ·Έ·͢ɻ
TɾOɾC • Constants and Variables • Struct and Class •
Optionals • Type Constraint • ͓·͚ : Tuples
Constants and Variables • let : immutableʢఆɺ࠶ೖෆՄʣ • var :
mutableʢมɺ࠶ೖՄʣ let : Կ͕خ͍͠ʁ
Constants and Variables let : خ͍͠ͱ͜Ζ • ແବʹՄมͳ෦Λগͳ͘͢Δ͜ͱ͕Ͱ͖Δʂ ʢແବʹՄมͳ෦͕͋Δͱෳࡶ͕͞૿ͯ͠ෆ۩߹ͷݩʣ ->جຊletͰએݴɻ࠶ೖͷඞཁੑ͕ग़͖ͯͨΒvarʹɻ
ҙ • letͰએݴͨ͠มʹΦϒδΣΫτ͕ೖ͞Ε͍ͯΔ߹ɺΦϒδΣ ΫτͷϓϩύςΟมߋͰ͖ͯ͠·͏Αɻ
Struct and Class • struct : ͠ɺclass : ࢀর͠ •
structܧঝෆՄ struct : Կ͕خ͍͠ʁ
Struct and Class struct : خ͍͠ͱ͜Ζ • ແବʹՄมͳ෦Λগͳ͘͢Δ͜ͱ͕Ͱ͖Δʂ ʢແବʹՄมͳ෦͕͋Δͱෳࡶ͕͞૿ͯ͠ෆ۩߹ͷݩʣ ->جຊstructͰɻঢ়ଶΛ࣋ͨ͟ΔΛಘͳ͔ͬͨΓܧঝ͕ඞཁͳ߹
classͰɻʢܧঝprotocolΛ͑༻Մೳͳ߹͋ΔΑʣ ҙ • ͠ͳͷͰͰ͔͍σʔλͷίϐʔཁҙ͔ʢ࠷దԽ͞ΕͯΔͱ ฉ͘ʣ
Optionals • There is a value, and it equals x
or • There isn’t value at all Optionals : Կ͕خ͍͠ʁ
Optionals Optionals : خ͍͠ͱ͜Ζ • ແବʹՄมͳ෦Λ(ry ->جຊnot OptionalͰɻOptionalͰͳ͚Εͬͯ͜͜nil ೖΔ͔ɺɺɺΈ͍ͨͳ͍ٙෆཁ ҙ
• Optionalͷཚ༻͢Δͱ
Type Constraint ܕ੍͕ڧ͍->҉ͷܕมݪଇͰ͖ͳ͍ʂ Type Constraint: خ͍͠ͱ͜Ζ • ແବʹՄม(ry
͓·͚ɿTuples ෳͷΛͻͱ·ͱΊʹͰ͖Δ ArrayDictionaryͱͷҧ͍ • ҟͳΔܕΛೖΕΒΕΔ • ϧʔϓॲཧ͕Ͱ͖ͳ͍ • ͷՃআ͕Ͱ͖ͳ͍
͓·͚ɿTuples ͳΜͰTupleʁ • ࣮Swiftͷશ෦Tuple • SwiftͷؔҾฦΓෳऔΕΔ->࣮྆ํ Tupleͳ͚ͩ
Have a nice Dev!