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Remove tail items while condition is true #1036

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atifaziz opened this issue Nov 13, 2023 · 0 comments · May be fixed by #1085
Open

Remove tail items while condition is true #1036

atifaziz opened this issue Nov 13, 2023 · 0 comments · May be fixed by #1085

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@atifaziz
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Consider adding an operator that remove items from the tail end of a sequence while a given predicate returns true. The proposed name and signature would be:

public static IEnumerable<T> SkipLastWhile<T>(this IEnumerable<T> source, Func<T, bool> predicate)

Example:

var xs = new[]
{
    1, 2,
    0, 0, // will be preserved (not in tail position)
    3, 4,
    0, 0, // will be removed
};

var result = xs.SkipLastWhile(x => x is 0);

Console.WriteLine(result.ToDelimitedString(", "));

Output:

1, 2, 0, 0, 3, 4
ArmoryNode added a commit to ArmoryNode/MoreLINQ that referenced this issue Oct 22, 2024
@ArmoryNode
Added SkipLastWhile extension method and associated tests
133ca25 
morelinq#1036
@ArmoryNode ArmoryNode linked a pull request Oct 22, 2024 that will close this issue
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Introduce SkipLastWhile extension ArmoryNode/MoreLINQ
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@atifaziz