[2015-8-13]
- Block = [globleblock retain]//Block仍在globle
- Block = [stackblock retain]//Block仍在stack
- Block = [globleblock copy]//Block仍在globle
- Block = [stackblock copy]//Block在heap，类型为__NSMallocBlock__
- Block = [mallocblock retain]//Block在heap，类型为__NSMallocBlock__，retainCount始终是1，但内存管理器中仍然会增加，需要谨慎使用
int main(int argc, const char * argv[]) {
long (^b1)(NSString *) = ^long (NSString* argc){
return 0;
};
int base = 100;
long (^b3)(NSString *) = ^long (NSString* argc){
return base+0;
};
long ret = b1(@"Yabao");
typedef long (^B)(NSString *);
// long (^b2)(NSString *) = [b1 retain];
B b2 = [b3 copy];
B b4 = [b1 copy];
[b2 retain];
long ret2 = b3(@"Harry");
NSMutableArray *first_array = [[NSMutableArray alloc]initWithObjects:@"first",@"second", nil];
NSLog(@"first_array retainCount = %zi",first_array.retainCount);
// b2.retainCount;//error Memeber reference base type ‘b‘(aka ‘long (^b1)(NSString *)‘ is not a structure or union)
[b2 release];//EXC_BAD_ACCESS
// [b2 release];//EXC_BAD_ACCESS
[first_array release];
时间： 2024-11-25 11:43:31