Update passing a closure as callback example #313
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This change updates the passing a closure as callback example to the one listed in the API docs for [Proc](https://crystal-lang.org/api/0.27.0/Proc.html). Basically... the type of `@@box` `Box(Int32 ->)` is actually a `Pointer(Void)?` now.
RX14
approved these changes
Jan 2, 2019
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This change updates the passing a closure as callback example to the one listed in the API docs for Proc.
Basically... the type of
@@boxBox(Int32 ->)is actually aPointer(Void)?now (or maybe it has always been that way?)