ios - NSAssert 会占用 iOS 设备上的任何内存吗？

Question

如果我们在带有 NSLogs 的设备上运行应用程序，那么它可能会在一定程度上降低应用程序的速度。

NSAssert 在内存方面是否与 NSLog 一样？

如有任何意见或建议，我们将不胜感激。

提前谢谢你。

Answer 1

也许这会回答你的问题

It's important to note that as of Xcode 4.2, assertions are turned off by default for release builds, which is accomplished by defining the NS_BLOCK_ASSERTIONS macro. That is to say, when compiled for release, any calls to NSAssert & co. are effectively removed.

来源:http://nshipster.com/nsassertionhandler/

如果您启用它们，那么它们是有代价的(显然它们需要评估)并且根据您让它们执行的代码而有所不同。对于简单的零比较，它可以忽略不计。

如需进一步引用，请参阅:http://www.mikeash.com/pyblog/friday-qa-2013-05-03-proper-use-of-asserts.html

特别是这段话

The runtime cost should be negligible, and if it's not, then you should redo your asserts to fix that.