objective c - Can I release an object created outside a block that uses it before the block is run? -


can myarray safely released before block?

nsmutablearray *myarray = [[nsmutablearray alloc] init]; [myarray addobject:@"a"]; [myarray addobject:@"b"];  // releasing here causes invalid object used inside block? [myarray release];  cccallblock *block = [cccallblock actionwithblock:^{     // print myarray contents console }];  [mynode runaction:block];

no, cannot release array before block, because objects inside array , array not usable after call of release, before block gets chance retain it.

you can make array autoreleased, in case release happen after function exits.

nsmutablearray *myarray = [nsmutablearray array]; [myarray addobject:@"a"]; [myarray addobject:@"b"];  cccallblock *block = [cccallblock actionwithblock:^{     // print myarray contents console }];  [mynode runaction:block];

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