forked from sneak/util
clawbot
7fb688772e
DedupeStrings returns a new slice holding each value once, in the order each value first appeared, and leaves the input slice alone. Comes with a doc comment and table-driven tests. (closes #1) Model: opus-5
24 lines
516 B
Go
24 lines
516 B
Go
package util
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// DedupeStrings returns a new slice holding each value of input once, in the
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// order in which each value first appears. The input slice is not modified.
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// A nil input returns nil.
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func DedupeStrings(input []string) []string {
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if input == nil {
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return nil
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}
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seen := make(map[string]struct{}, len(input))
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out := make([]string, 0, len(input))
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for _, value := range input {
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if _, ok := seen[value]; ok {
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continue
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}
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seen[value] = struct{}{}
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out = append(out, value)
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}
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return out
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}
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