More precise implode() return type #3774
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//cc @VincentLanglet since its string accessory business :) |
staabm
commented
Jan 6, 2025
| @@ -80,22 +80,23 @@ private function implode(Type $arrayType, Type $separatorType): Type | |||
| } | |||
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| $accessoryTypes = []; | |||
| $valueTypeAsString = $arrayType->getIterableValueType()->toString(); | |||
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the actual change is here: we use toString as the implode function internally casts everything.
that way the string types detection also works for unions of strings and non-strings (e.g. 2|'a') and so we get more precise results
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mvorisek
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Jan 7, 2025
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staabm
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Feb 15, 2025
| @@ -49,6 +61,6 @@ public function constArrays5($constArr) { | |||
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| /** @param array{0: 1, 1: 'a'|'b', 3?: 'c'|'d', 4?: 'e'|'f', 5?: 'g'|'h', 6?: 'x'|'y'} $constArr */ | |||
| public function constArrays6($constArr) { | |||
| assertType("string", implode('', $constArr)); | |||
| assertType("literal-string&lowercase-string&non-falsy-string", implode('', $constArr)); | |||
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Memo to me: Literal string is wrong here
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