Category: Closure pattern

ARC-Block-Avoid retain cycles and crashes

Post author By andras.palfi
Post date July 20, 2015
Categories In Blocks, Closure pattern, Dev, iOS, Swift

Using blocks which captures self (explicitly or automatically by referencing an iVar!) you have the chance to a retain cycle where the block keeps self and self keeps the block or a crash when self is released. This is true for Obj-C as well as for Swift. The proper usage declared by Apple itself: store […]

Blocks in Objective-C

Post author By andras.palfi
Post date March 11, 2015
Categories In Blocks, Closure pattern, Dev, iOS, Quick reference

Blocks in Objective-C Quick overview Blocks are the closure pattern implementation in Objective-C. Blocks are objects containing code like a method but blocks are standalone objects (not belonging to a specific class/instance) encapsulating and capturing the code and variables enclosed in the beginning and closing brackets. You declare a block type or variable this way: returnType […]