Cleaned Code by Removing Location Tracking for Errors

MathPad/MPFactorial.m

@@ -34,12 +34,7 @@
     return self;
 }
 
-- (NSRange)range
-{
-    return NSMakeRange(0, 0);
-}
-
-- (BOOL)validate:(MPParseError *__autoreleasing *)error
+- (BOOL)validate:(NSError *__autoreleasing *)error
 {
     return [self.value validate:error];
 }
@@ -50,9 +45,4 @@
     return [[NSDecimalNumber alloc] initWithDouble:tgamma(value+1)];
 }
 
-- (NSArray *)expressionElements
-{
-    return @[@"!"];
-}
-
 @end