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Update FirstWhere.swift #1

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Update FirstWhere.swift #1

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7 changes: 4 additions & 3 deletions Sources/Parsing/Parsers/FirstWhere.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -11,10 +11,11 @@ where
}

@inlinable
public func parse(_ input: inout Input) -> Input.Element? {
guard let first = input.first, self.predicate(first) else { return nil }
public func parse(_ input: inout Input) -> Input? {
let firstOfCollection = input.prefix(1)
guard let firstElement = input.first, self.predicate(firstElement) else { return nil }
input.removeFirst()
return first
return firstOfCollection
}
}

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