Cleaned Code & Fixed Some Errors

2014-11-29 00:20:05 +01:00
parent b6973dc24a
commit 98e4a6dde6
13 changed files with 61 additions and 101 deletions
--- a/MathPad/MPEvaluationContext.m
+++ b/MathPad/MPEvaluationContext.m
@@ -53,6 +53,7 @@ static MPEvaluationContext *sharedContext;
 - (BOOL)defineVariable:(NSString *)variable
                 value:(NSDecimalNumber *)value
 {
+    [self undefineVariable:variable];
    if ([self isVariableDefined:variable]) {
        return NO;
    }
@@ -61,14 +62,6 @@ static MPEvaluationContext *sharedContext;
    return YES;
 }

- (BOOL)redefineVariable:(NSString *)variable
-                   value:(NSDecimalNumber *)value
-{
-    [self undefineVariable:variable];
-    return [self defineVariable:variable
-                          value:value];
-}
-
 - (void)undefineVariable:(NSString *)variable
 {
    NSMutableDictionary *currentBindings = self.stack.lastObject;