iOS开发——语法OC篇&BOOL / bool / Boolean / NSCFBoolean四者区别

分类: IT文章 • 2024-10-08 07:37:43

Name	Typedef	Header	True Value	False Value
`BOOL`	`signed char`	objc.h	`YES`	`NO`
`bool`	`_Bool` (`int`)	stdbool.h	`true`	`false`
`Boolean`	`unsigned char`	MacTypes.h	`TRUE`	`FALSE`
`NSNumber`	`__NSCFBoolean`	Foundation.h	`@(YES)`	`@(NO)`
`CFBooleanRef`	`struct`	CoreFoundation.h	`kCFBooleanTrue`