39 lines
658 B
Go
39 lines
658 B
Go
package kit
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import (
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"cmp"
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"slices"
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"sort"
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)
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// MapKeys returns map keys only
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func MapKeys[T cmp.Ordered, V any](data map[T]V) []T {
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keys := make([]T, 0, len(data))
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for k := range data {
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keys = append(keys, k)
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}
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slices.Sort(keys)
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return keys
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}
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// MergeMapKeys returns map keys only from multiple maps
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func MergeMapKeys[V any](m map[string]V, adds ...map[string]V) []string {
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uniq := map[string]bool{}
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for k := range m {
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uniq[k] = true
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}
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for _, add := range adds {
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for k := range add {
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uniq[k] = true
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}
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}
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keys := make([]string, 0, len(uniq))
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for k := range uniq {
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keys = append(keys, k)
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}
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sort.Strings(keys)
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return keys
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}
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