@@ -775,11 +775,11 @@
 }
 
 - (OFArray*)splitWithDelimiter: (OFString*)delimiter
 {
 	OFAutoreleasePool *pool;
-	OFArray *array;
+	OFMutableArray *array;
 	const char *delim = [delimiter cString];
 	size_t delim_len = [delimiter cStringLength];
 	size_t i, last;
 
 	array = [OFMutableArray array];
@@ -869,107 +869,6 @@
 		num = newnum;
 	}
 
 	return num;
 }
-
-- setToCString: (const char*)str
-{
-	@throw [OFNotImplementedException newWithClass: isa
-					      selector: _cmd];
-}
-
-- appendCString: (const char*)str
-{
-	@throw [OFNotImplementedException newWithClass: isa
-					      selector: _cmd];
-}
-
-- appendCString: (const char*)str
-     withLength: (size_t)len
-{
-	@throw [OFNotImplementedException newWithClass: isa
-					      selector: _cmd];
-}
-
-- appendCStringWithoutUTF8Checking: (const char*)str
-{
-	@throw [OFNotImplementedException newWithClass: isa
-					      selector: _cmd];
-}
-
-- appendCStringWithoutUTF8Checking: (const char*)str
-			    length: (size_t)len
-{
-	@throw [OFNotImplementedException newWithClass: isa
-					      selector: _cmd];
-}
-
-- appendString: (OFString*)str
-{
-	@throw [OFNotImplementedException newWithClass: isa
-					      selector: _cmd];
-}
-
-- appendWithFormat: (OFString*)fmt, ...
-{
-	@throw [OFNotImplementedException newWithClass: isa
-					      selector: _cmd];
-}
-
-- appendWithFormat: (OFString*)fmt
-	 arguments: (va_list)args
-{
-	@throw [OFNotImplementedException newWithClass: isa
-					      selector: _cmd];
-}
-
-- reverse
-{
-	@throw [OFNotImplementedException newWithClass: isa
-					      selector: _cmd];
-}
-
-- upper
-{
-	@throw [OFNotImplementedException newWithClass: isa
-					      selector: _cmd];
-}
-
-- lower
-{
-	@throw [OFNotImplementedException newWithClass: isa
-					      selector: _cmd];
-}
-
-- removeCharactersFromIndex: (size_t)start
-		    toIndex: (size_t)end
-{
-	@throw [OFNotImplementedException newWithClass: isa
-					      selector: _cmd];
-}
-
-- replaceOccurrencesOfString: (OFString*)str
-		  withString: (OFString*)repl
-{
-	@throw [OFNotImplementedException newWithClass: isa
-					      selector: _cmd];
-}
-
-- removeLeadingWhitespaces
-{
-	@throw [OFNotImplementedException newWithClass: isa
-					      selector: _cmd];
-}
-
-- removeTrailingWhitespaces
-{
-	@throw [OFNotImplementedException newWithClass: isa
-					      selector: _cmd];
-}
-
-- removeLeadingAndTrailingWhitespaces
-{
-	@throw [OFNotImplementedException newWithClass: isa
-					      selector: _cmd];
-}
 @end