The $(D_PSYMBOL wstring) first string to compre to
The $(D_PSYMBOL wstring) to compare the first $(D_PSYMBOL wstring) against
$(D_KEYWORD true) if the argument is not $(D_KEYWORD null) and it represents an equivalent $(D_PSYMBOL wstring) ignoring case; (D_KEYWORD false) otherwise
AssertException if the length of any of the wstrings is 0
opEquals(Object)
Compares the $(D_PSYMBOL wstring) to another $(D_PSYMBOL wstring), ignoring case considerations. Two wstrings are considered equal ignoring case if they are of the same length and corresponding characters in the two wstrings are equal ignoring case.