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// RUN: %target-typecheck-verify-swift
func test1(_: ()) {}
test1(())
func test2() {}
test2()
func test4(_: (Int, Int) -> ()) {}
test4({ (x,y) in })
func test5(_: (Int, Int, Int) -> ()) {}
test5({ (x,y,z) in })
func test6(_: ((Int, Int)) -> ()) {}
test6({ (x,y) in })
func test7(_: ((Int, Int, Int)) -> ()) {}
test7({ (x,y,z) in })
test6({ (_ x, _ y) in })
test6({ (_, _) in })
test6({ (x:Int, y:Int) in })
test6({ (_, _) ->() in })
func test8(_: ((Int, Int)) -> Int) {}
test8 { (_, _) -> Int in 2 }
test8 { (x, y) in x }
let items = Array(zip(0..<10, 0..<10))
_ = items.filter { (_, x) in x.isMultiple(of: 2) }
_ = items.filter { _ in true }
func toString(indexes: Int?...) -> String {
let _ = indexes.enumerated().map({ (i: Int, index: Int?) -> String? in
let _: Int = i
if index != nil {}
return ""
})
let _ = [(1, 2)].contains { $0 != $1 }
_ = ["Hello" : 2].map { ($0, ($1)) }
}
extension Dictionary {
public mutating func merge(with dictionary: Dictionary) {
dictionary.forEach { updateValue($1, forKey: $0) }
}
}
let dictionary: [String: String] = [:]
_ = dictionary.first { (column, value) in true }!.value
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