Re: What is "TypeA -> TypeB"?
Re: What is "TypeA -> TypeB"?
- Subject: Re: What is "TypeA -> TypeB"?
- From: Marco S Hyman <email@hidden>
- Date: Thu, 02 Jul 2015 15:49:54 -0700
>
> I can write in-line handlers for this, but I'm trying to write a separate method, and just assign the method as a handler, and I can't seem to get the signature right.
It gets interesting when you want to also specify that the handler uses the
C calling convention to pass as a callback to legacy code. AFAICT you can’t
do that using a function, but you can when assigning a closure to a variable.
The handler winds up looking something like
let handler: @convention(c) UnsafeMutablePointer<Void> -> Void = {
arg in
// ...
}
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