Introduction to the Swift Language - Chicago Swift Developer Meetup - Screen 11 on FlowVella - Presentation Software for Mac iPad and iPhone

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“Functions are actually a special case of closures”*

Type may be inferred by context. Single expressions closures may omit return

Parameter names can be shortened to $0, $1, etc. Operator functions can be even briefer

Closures

* Syntax diagram, sample code, and quote from Apple Inc. “The Swift Programming Language.” iBooks. https://itun.es/us/jEUH0.l

var names = ["Neil", "Tim", "Kiran"]

var reversed : [ String ]

reversed = sorted(names, { (s1: String, s2: String) -> Bool in

return s1 > s2

} )

reversed = sorted(names, { s1, s2 in s1 > s2 } )

reversed = sorted(names, { $0 > $1 } )

reversed = sorted(names, >)

https://gist.github.com/mthouser/677f89b5750b96d6fca5

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Introduction to the Swift Language - Chicago Swift Developer Meetup

v 2015-04-13a

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