mirror of
https://github.com/apple/swift.git
synced 2025-12-21 12:14:44 +01:00
b2cc34c241
If you want to make the parameter and argument label the same in
places where you don't get the argument label for free (i.e., the
first parameter of a function or a parameter of a subscript),
double-up the identifier:
func translate(dx dx: Int, dy: Int) { }
Make this a warning with Fix-Its to ease migration. Part of
rdar://problem/17218256.
Swift SVN r27715
62 lines
1.7 KiB
Swift
62 lines
1.7 KiB
Swift
// RUN: %target-parse-verify-swift
|
|
|
|
func myMap<T1, T2>(array: [T1], _ fn: (T1) -> T2) -> [T2] {}
|
|
|
|
var intArray : [Int]
|
|
|
|
myMap(intArray, { String($0) })
|
|
myMap(intArray, { x -> String in String(x) } )
|
|
|
|
// Closures with too few parameters.
|
|
func foo(x: (Int, Int) -> Int) {}
|
|
foo({$0}) // expected-error{{cannot invoke 'foo' with an argument list of type '((_) -> _)'}} expected-note{{expected an argument list of type '((Int, Int) -> Int)'}}
|
|
|
|
struct X {}
|
|
func mySort(array: [String], _ predicate: (String, String) -> Bool) -> [String] {}
|
|
func mySort(array: [X], _ predicate: (X, X) -> Bool) -> [X] {}
|
|
var strings : [String]
|
|
mySort(strings, { x, y in x < y })
|
|
|
|
// Closures with inout arguments.
|
|
func f0<T, U>(t: T, _ f: (inout T) -> U) -> U {
|
|
var t2 = t;
|
|
return f(&t2)
|
|
}
|
|
|
|
struct X2 {
|
|
func g() -> Float { return 0 }
|
|
}
|
|
|
|
f0(X2(), {$0.g()}) // expected-error {{cannot invoke 'f0' with an argument list of type '(X2, (_) -> _)'}} expected-note{{expected an argument list of type '(T, (inout T) -> U)'}}
|
|
|
|
// Autoclosure
|
|
func f1(@autoclosure f f: () -> Int) { }
|
|
func f2() -> Int { }
|
|
f1(f: f2) // expected-error{{function produces expected type 'Int'; did you mean to call it with '()'?}}{{9-9=()}}
|
|
f1(f: 5)
|
|
|
|
// Ternary in closure
|
|
var evenOrOdd : Int -> String = {$0 % 2 == 0 ? "even" : "odd"}
|
|
|
|
// <rdar://problem/15367882>
|
|
func foo() {
|
|
not_declared({ $0 + 1 }) // expected-error{{use of unresolved identifier 'not_declared'}}
|
|
}
|
|
|
|
// <rdar://problem/15536725>
|
|
struct X3<T> {
|
|
init(_: (T)->()) {}
|
|
}
|
|
|
|
func testX3(var x: Int) {
|
|
var q = X3({ x = $0 })
|
|
}
|
|
|
|
// <rdar://problem/13811882>
|
|
func test13811882() {
|
|
var f : (Int) -> (Int, Int) = {($0, $0)}
|
|
var x = 1
|
|
var g : (Int) -> (Int, Int) = {($0, x)}
|
|
}
|
|
|