學寫iPhone程式 第31堂 - 完成長方型

[mitbrother]

這堂很有用, 謝謝!

[vastpoint]

Thank you

[iccwkm]

獲益良多，thank a lot.

[tongsanba]

@iccwkm 唔洗客氣xDDDD

[iccwkm]

Vincent 請問上述例句中,你有時在NSLog中會用r.width , r.height, [r area], [r perimeter], 係吾係有持別用意? r.width and r.height = [r width] and [r height] ?

[tongsanba]

@iccwkm 係一樣的, 依個係叫dot notation(點運算符式)

例子for getters method: myVar = [someObject foo]; 係等於 myVar = someObject.foo;

例子for setters method: someObject.foo = myVar; 係等於 [someObject setFoo:myVar];