We use blocks in IOS <4.0

For those who are familiar with the blocks in Objective-C, but cannot yet use them because of the need to support applications for ios under 4.0 versions, or eschew the patched PLBlocks compiler , I suggest running runtime blocks in the form of a static libesBlocksRuntime.a

The runtime itself was pulled from the sources of the compiler-rt project, and wrapped in ESBlock block classes. Added missing methods - [NSArray enumerateObjectsUsingBlock:], etc. also UIView block extensions.

To connect to the project, it is enough to download the source code of the project , and add it to dependencies for example .
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Write questions and suggestions in lichku - happy to answer everyone interested.

Here you can read about the series of blocks in Habré.