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Added some methods to „Working With the Expression Tree“ section

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Kim Wittenburg
2014-04-23 03:10:17 +02:00
parent 24c53bde2e
commit 3c944f3fc0
4 changed files with 57 additions and 5 deletions
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8
MathPad/MPExpression.h
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@@ -44,13 +44,17 @@ extern NSString *MPDivisionOperator;
- (instancetype)initWithString:(NSString *)aString;
- (instancetype)initWithFunction:(MPFunction *)aFunction;
+ (instancetype)expression;
+ (instancetype)expressionWithString:(NSString *)aString;
+ (instancetype)expressionWithFunction:(MPFunction *)aFunction;
+ (instancetype)expressionWithSymbols:(NSArray *)symbols;
#pragma mark Working with Expressions
#pragma mark Working With the Expression Tree
- (NSUInteger)indexOfSymbol:(id)symbol;
- (id)symbolAtIndexPath:(NSIndexPath *)indexPath; // May also return MPExpression
#pragma mark Working With Expressions
- (NSUInteger)length;