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38 lines
753 B
Go
38 lines
753 B
Go
// Copyright 2022 Robert S. Muhlestein.
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// SPDX-License-Identifier: Apache-2.0
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package filter
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import "strings"
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// HasPrefix filters the Text input set and returns only those elements
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// that have the give prefix.
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func HasPrefix[T Text](set []T, pre string) []T {
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m := []T{}
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for _, i := range set {
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if strings.HasPrefix(string(i), pre) {
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m = append(m, i)
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}
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}
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return m
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}
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// Minus performs a set "minus" operation by returning a new set with
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// the elements of the second set removed from it.
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func Minus[T Text, M Text](set []T, min []M) []T {
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m := []T{}
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for _, i := range set {
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var seen bool
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for _, n := range min {
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if string(n) == string(i) {
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seen = true
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break
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}
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}
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if !seen {
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m = append(m, i)
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}
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}
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return m
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}
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