如果没有,如何循环遍历IBOutlets(如temp1,temp2,temp3)并按顺序访问属性?
If not, how can I loop through IBOutlets (like temp1, temp2, temp3) and chance a property sequentially?
在matlab中,我将连接一个字符串并使用eval.
In matlab, I would concatenate a string and use eval.
for k = 1:3 eval(["temp",num2str(k)]); end我是Swift的新手,并且想通过IBOutlets做到这一点.像
I'm new to Swift, and want to do this with IBOutlets. Something like,
for(var k = 0, ++k, k==4) { eval(["self.temp",String(k),".backgroundcolor"]); end我知道eval函数是Matlab格式的,但是我只是在表达我想做的事情.
I know the eval function is in Matlab format, but I'm just expressing what I'd like to have done.
推荐答案Swift是一种静态类型语言,因此无法在Matlab中实现"eval"之类的东西.您可以通过以下代码达到相同的行为:
Swift is a static type language, so that it's impossible to implement something like "eval" in Matlab. You can reach same behaviour with this code:
@IBOutlet var labels: [UILabel]! override func viewDidLoad() { super.viewDidLoad() for label in labels { label.backgroundColor = UIColor.redColor() } }尽管可能可以使用运行时进行一些魔术操作,但是连接同一插座集合中的所有组件是最简单的方法.
Although probably it is possible to do some magic using the runtime, connecting all the components in the same outlet collection is the easiest way.
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是否存在等效的“评估"?功能快速,就像在Matlab中一样?
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