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Revert "Revert count(where:)" (#70816)

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* Revert "Revert count(where:)"

This reverts commit 779ea19a6a.

Now that SE-0220 has been re-accepted, this adds the `count(where:)` 
Sequence method to the standard library.
This commit is contained in:
Nate Cook
2024-03-29 13:53:53 -05:00
committed by GitHub
parent 8b22079291
commit 38e1370884
6 changed files with 215 additions and 6 deletions
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15
test/Constraints/diagnostics.swift
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@@ -172,7 +172,9 @@ func rdar21080030() {
var s = "Hello"
// https://github.com/apple/swift/issues/50141
// This should be 'cannot_call_non_function_value'.
if s.count() == 0 {} // expected-error{{cannot call value of non-function type 'Int'}} {{13-15=}}
if s.count() == 0 {}
// expected-error@-1 {{generic parameter 'E' could not be inferred}}
// expected-error@-2 {{missing argument for parameter 'where' in call}}
}
// <rdar://problem/21248136> QoI: problem with return type inference mis-diagnosed as invalid arguments
@@ -1534,7 +1536,8 @@ func issue63746() {
func rdar86611718(list: [Int]) {
String(list.count())
// expected-error@-1 {{cannot call value of non-function type 'Int'}}
// expected-error@-1 {{missing argument for parameter 'where' in call}}
// expected-error@-2 {{generic parameter 'E' could not be inferred}}
}
// rdar://108977234 - failed to produce diagnostic when argument to AnyHashable parameter doesn't conform to Hashable protocol
@@ -1553,18 +1556,18 @@ func testNilCoalescingOperatorRemoveFix() {
let _ = "" /* This is a comment */ ?? "" // expected-warning {{left side of nil coalescing operator '??' has non-optional type 'String', so the right side is never used}} {{13-43=}}
let _ = "" // This is a comment
?? "" // expected-warning {{left side of nil coalescing operator '??' has non-optional type 'String', so the right side is never used}} {{1555:13-1556:10=}}
?? "" // expected-warning {{left side of nil coalescing operator '??' has non-optional type 'String', so the right side is never used}} {{1558:13-1559:10=}}
let _ = "" // This is a comment
/*
* The blank line below is part of the test case, do not delete it
*/
?? "" // expected-warning {{left side of nil coalescing operator '??' has non-optional type 'String', so the right side is never used}} {{1558:13-1563:10=}}
?? "" // expected-warning {{left side of nil coalescing operator '??' has non-optional type 'String', so the right side is never used}} {{1561:13-1566:10=}}
if ("" ?? // This is a comment // expected-warning {{left side of nil coalescing operator '??' has non-optional type 'String', so the right side is never used}} {{9-1566:9=}}
if ("" ?? // This is a comment // expected-warning {{left side of nil coalescing operator '??' has non-optional type 'String', so the right side is never used}} {{9-1569:9=}}
"").isEmpty {}
if ("" // This is a comment
?? "").isEmpty {} // expected-warning {{left side of nil coalescing operator '??' has non-optional type 'String', so the right side is never used}} {{1568:9-1569:12=}}
?? "").isEmpty {} // expected-warning {{left side of nil coalescing operator '??' has non-optional type 'String', so the right side is never used}} {{1571:9-1572:12=}}
}