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acalism/objc-variable.m

Created June 14, 2018 02:41
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Difference between ivar and global var
Raw
objc-variable.m
@implementation MyClass {
// It is an ivar, or called member variable
// Can NOT be initialized when defined.
// Can be accessed with `self->_i`
int _i;
}
int i = 9; // Global variable, and can be initialized when defined.
@end
// Another file
extern int i;
NSLog(@"%i", i);
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