NSLog C结构体是否可能（像CGRect或CGPoint）？ [英] Is It Possible to NSLog C Structs (Like CGRect or CGPoint)?

问题描述

我想要能够调试C结构，而不必显式地键入它们组成的每个属性。

I want to be able to debug C structures without having to explicitly type every property that they consist of.

我想能够做这样的事情：

i.e. I want to be able to do something like this:

CGPoint cgPoint = CGPointMake(0,0);
NSLog(@"%@",cgPoint);

很明显，'％@'不能工作，因此问题。

Obviously the '%@' won't work, hence the question.

推荐答案

您可以尝试：

NSLog(@"%@", NSStringFromCGPoint(cgPoint));

有许多函数 CG结构到 NSString s。它不工作的原因是因为％@ 表示一个对象。 A CGPoint 是一个C结构（也是 CGRect s和 CGSize s）。

There are a number of functions provided by UIKit that convert the various CG structs into NSStrings. The reason it doesn't work is because %@ signifies an object. A CGPoint is a C struct (and so are CGRects and CGSizes).

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