External links
University of Warsaw, Centre for Rehabilitation and Paediatric Audiology, E-mail
Category:1939 births
Category:Polish otolaryngologists
Category:Living people
[self setup];
dispatch_group_t group = dispatch_group_create();
[self setup];
[self addOperationWithName:@"foo" object:nil block:^{
[group addOperationWithBlock:^{
[self stop];
}];
}];
dispatch_group_t myGroup = dispatch_group_create();
[self addOperationWithName:@"foo" object:nil block:^{
[myGroup addOperationWithBlock:^{
[self stop];
}];
}];
dispatch_group_t myGroup2 = dispatch_group_create();
[self addOperationWithName:@"foo" object:nil block:^{
[myGroup2 addOperationWithBlock:^{
[self stop];
}];
}];
dispatch_group_t allGroup = dispatch_group_create();
[self addOperationWithName:@"foo" object:nil block:^{
[group addOperationWithBlock:^{
[myGroup addOperationWithBlock:^{
[myGroup2 addOperationWithBlock:^{
[allGroup addOperationWithBlock:^{ ac619d1d87
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