23 lines
399 B
Objective-C
23 lines
399 B
Objective-C
//
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// MPExpressionElement.h
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// MathPad
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//
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// Created by Kim Wittenburg on 10.08.14.
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// Copyright (c) 2014 Kim Wittenburg. All rights reserved.
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//
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@import Foundation;
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#import "MPParseError.h"
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@protocol MPExpressionElement <NSObject, NSCopying, NSCoding>
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- (BOOL)isString;
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- (BOOL)isFunction;
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- (NSUInteger)length;
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- (NSDecimalNumber *)evaluate:(MPParseError *__autoreleasing *)error;
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@end
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