是什么?
谁能举例解释?
检验方法参数不是nil或0,是一种简单的方法。 因此,你基本上利用它来设定一个先决条件,指出必须确定一些参数。 如果不确定,宏观因素就会导致ort缩,并产生一条错误。 因此:
- (void)someMethod:(id)someObjectThatMustNotBeNil
{
// Make sure that someObjectThatMustNotBeNil is really not nil
NSParameterAssert( someObjectThatMustNotBeNil );
// Okay, now do things
}
先决条件是确保方案管理员正确使用方法/工具的简单办法。 设想是,如果一名方案管理员违反先决条件,则申请在脱硫和基本测试期间即告终止。
NSParameterAssert( index >= 0 ); // ensure no negative index is supplied
NSPara公墓(宏观)的 Apple果文件
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