Created
January 12, 2016 21:56
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Check if object is a block - nice for assertions.
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| PSPDF_EXTERN BOOL PSPDFIsBlock(id _Nullable block) { | |
| static Class blockClass; | |
| static dispatch_once_t onceToken; | |
| dispatch_once(&onceToken, ^{ | |
| blockClass = [^{} class]; | |
| while ([blockClass superclass] != NSObject.class) { | |
| blockClass = [blockClass superclass]; | |
| } | |
| }); | |
| return [block isKindOfClass:blockClass]; | |
| } |
Licensed under MIT. Feel free to use.
Thanks for the prompt reply!
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Hi Peter, is there a license that you wish to use for this code?
Thanks