Copy returns a copy of string in a new pointer.

CopySlice returns a copy of the slice.

EqualSlices checks if the slices are equal.

Include returns true or false if given string is in slice.

IndexOf returns index position in slice from given string If value is -1, the string does not found.

ReverseSlice reverses a string slice.

UniqueAppend appends a string if not exist in the slice.