unique.go

package slice

import "strings"

func UniqueInt64(s []int64) []int64 {
	size := len(s)
	if size == 0 {
		return []int64{}
	}

	m := make(map[int64]struct{})
	for i := 0; i < size; i++ {
		m[s[i]] = struct{}{}
	}

	realLen := len(m)
	ret := make([]int64, realLen)

	idx := 0
	for key := range m {
		ret[idx] = key
		idx++
	}

	return ret
}

func UniqueInt(s []int) []int {
	size := len(s)
	if size == 0 {
		return []int{}
	}

	m := make(map[int]struct{})
	for i := 0; i < size; i++ {
		m[s[i]] = struct{}{}
	}

	realLen := len(m)
	ret := make([]int, realLen)

	idx := 0
	for key := range m {
		ret[idx] = key
		idx++
	}

	return ret
}

func UniqueString(s []string) []string {
	size := len(s)
	if size == 0 {
		return []string{}
	}

	m := make(map[string]struct{})
	for i := 0; i < size; i++ {
		m[s[i]] = struct{}{}
	}

	realLen := len(m)
	ret := make([]string, realLen)

	idx := 0
	for key := range m {
		ret[idx] = key
		idx++
	}

	return ret
}

func UniqueTrimString(s []string) []string {
	size := len(s)
	if size == 0 {
		return []string{}
	}

	m := make(map[string]struct{})
	for i := 0; i < size; i++ {
		item := strings.TrimSpace(s[i])
		if item == "" {
			continue
		}
		m[item] = struct{}{}
	}

	realLen := len(m)
	ret := make([]string, realLen)

	idx := 0
	for key := range m {
		ret[idx] = key
		idx++
	}

	return ret
}