block小结--02 block的种类；

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验证block是属于哪类的block；

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NSGlobalBlock

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验证：不引用外部的变量就是globalBlock

//有参数，有返回值------num,num1可以省略；

int(^blo3)(int num,int num1 ) = ^(int num1,int num2){

NSLog(@"blo3内部返回的值＝ %d",(num2+num1)/2);

return num1 + num2;

};

NSLog(@"%d",blo3(30,40));

NSLog(@"%@",blo3 ); //<__NSGlobalBlock__: 0x100002110>

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2016-05-31 19:15:58.721 总结--block[6054:847379] blo3内部返回的值＝ 35

2016-05-31 19:15:58.722 总结--block[6054:847379] 70

2016-05-31 19:15:58.722 总结--block[6054:847379] <__NSGlobalBlock__: 0x100002110>

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__NSMallocBlock__

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__block int a = 10;

int(^blo3)(int num,int num1 ) = ^(int num1,int num2){

NSLog(@"blo3内部返回的值＝ %d",(num2+num1)/2);

a = 20;

// NSLog(@"%d",a);

return num1 + num2;

};

NSLog(@"%d",blo3(30,40));

NSLog(@"引用外部变量int a之后-----%@",blo3 );//引用外部变量int a之后-----<__NSMallocBlock__: 0x100601270>

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__NSStackBlock__

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int a = 10;

NSLog(@"stack-----%@",^{

NSLog(@"%d",a);

});

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//stack-----<__NSStackBlock__: 0x7fff5fbff6d8>

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--------------------------------------------汇总------------------------------------------------------------------------

NSLog(@"gloal-----%@",^{

NSLog(@"aaa");

});

int a = 10;

void (^block5)() = ^(){

NSLog(@"%d",a);

};

NSLog(@"malloc----%@",block5);

NSLog(@"stack-----%@",^{

NSLog(@"%d",a);

});

--------------------------------------------汇总------------------------------------------------------------------------

2016-05-31 19:55:36.423 总结--block[6228:862567] malloc----<__NSMallocBlock__: 0x1002005c0>

2016-05-31 19:55:36.423 总结--block[6228:862567] gloal-----<__NSGlobalBlock__: 0x1000021c0>

2016-05-31 19:55:36.423 总结--block[6228:862567] stack-----<__NSStackBlock__: 0x7fff5fbff6d8>

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