Created
March 1, 2016 16:02
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Deduplicate a Slice of Strings in Go
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// Deduplicate returns a new slice with duplicates values removed. | |
func Deduplicate(s []string) []string { | |
if len(s) == 0 { | |
return s | |
} | |
result := []string{} | |
seen := make(map[string]struct{}) | |
for _, val := range s { | |
if _, ok := seen[val]; !ok { | |
result = append(result, val) | |
seen[val] = val | |
} | |
} | |
return result | |
} |
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You can also optimize
if len(s) == 0
toif len(s) <= 1
as a slice of length 1 cannot have duplicates.