22 lines
679 B
Go
22 lines
679 B
Go
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// Copyright 2024 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package container
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import "slices"
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// FilterSlice ranges over the slice and calls include() for each element.
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// If the second returned value is true, the first returned value will be included in the resulting
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// slice (after deduplication).
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func FilterSlice[E any, T comparable](s []E, include func(E) (T, bool)) []T {
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filtered := make([]T, 0, len(s)) // slice will be clipped before returning
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seen := make(map[T]bool, len(s))
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for i := range s {
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if v, ok := include(s[i]); ok && !seen[v] {
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filtered = append(filtered, v)
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seen[v] = true
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}
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}
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return slices.Clip(filtered)
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}
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