reading http://www.d-programming-language.org/phobos/std_array.html#split
--------------------------------------------------- S[] split(S)(S s); // merge space together and UnÂqual!(S1)[] split(S1, S2)(S1 s, S2 delim); // do not merge delim together ? --------------------------------------------------- why the second split function do not merge delim together? how merge delim together?