Swiftで fluentなインターフェースを実装する

fluentなAPIを持った色ジェネレーターをSwiftで実装した話。

参考文献
http://martinfowler.com/bliki/FluentInterface.html
http://en.wikipedia.org/wiki/Fluent_interface

Transcript

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   qVFOUͳΠϯλʔϑΣʔε Λ࣮૷͢Δ Tyler Tape github.com/sozorogami/ @sozorogami_jp
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4. private void makeNormal(Customer customer) { Order o1 = new Order(); customer.addOrder(o1); OrderLine line1 = new OrderLine(6, Product.find("TAL")); o1.addLine(line1); OrderLine line2 = new OrderLine(5, Product.find("HPK")); o1.addLine(line2); OrderLine line3 = new OrderLine(3, Product.find("LGV")); o1.addLine(line3); line2.setSkippable(true); o1.setRush(true); } ຊདྷ
5. private void makeFluent(Customer customer) { customer.newOrder() .with(6, "TAL") .with(5, "HPK").skippable() .with(3, "LGV") .priorityRush(); } 'MVFOUͳελΠϧ
6. Customer *customer = [Customer new]; [[[[[[customer newOrder] withAmount:@6 ofItem:@"TAL"] withAmount:@5 ofItem:@"HPK"] skippable] withAmount:@3 ofItem:@"LGV"] priorityRush]; 0CK$Ͱ͸ɾɾɾ ƅЧƅʀ)
7. ͦ͜Ͱɾɾɾ HJUIVCDPNTP[PSPHBNJ 4BDL0G3BJOCPXT
8. let singleColor = theColor(red) singleColor.next()! singleColor.next()
9. let manyTimes = theColor(green).times(3) manyTimes.next()! manyTimes.next()! manyTimes.next()! manyTimes.next()
10. let infinity = theColor(yellow).forever() infinity.next()! infinity.next()! infinity.next()! infinity.next()!
11. let chain = theColor(orange).then(theColor(purple)).forever() chain.next()! chain.next()! chain.next()! chain.next()!
12. let yellowToBrown = gradient().from(yellow).to(brown).times(10) yellowToBrown.next()! ...
13. let whiteToBlue = gradient().from(white).to(blue) .times(4) let blueToWhite = gradient().from(blue).to(white) .times(4) let waves = whiteToBlue.then(blueToWhite) .forever() waves.next()! ...
14. ࣮૷ TFMGΛ
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15. ଞͷྫ 2VJDL .BTPOSZ github.com/Quick/Quick github.com/Masonry/Masonry make.top.equalTo(superview.mas_top).with.offset(padding.top); expect(click.hasHighFrequency).to(beTruthy())
16. ࢀߟจݙ http://martinfowler.com/bliki/FluentInterface.html http://en.wikipedia.org/wiki/Fluent_interface
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