golang 泛型举例：切片去重

// Distinct 函数用于对输入的切片进行去重，支持整型、浮点型和字符串类型
func Distinct[T int | int8 | int16 | int32 | int64 | uint | uint8 | uint16 | uint32 | uint64 | float32 | float64 | string](s []T) []T {
  if len(s) == 0 {
    return s
  }
  seen := make(map[T]struct{})
  result := make([]T, 0, len(s))
  for _, item := range s {
    if _, exists := seen[item]; !exists {
      seen[item] = struct{}{}
      result = append(result, item)
    }
  }
  return result
}