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luismesas/gist:3429720

Created August 22, 2012 21:51
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NSString equation evaluator using NSExpression
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gistfile1.m
NSString *equation = @"floor((19-10)/2)";
NSNumber *result = [NSExpression expressionWithFormat:equation];
NSLog(@"%@", result); // logs "4"
@luismesas
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I have use this on iPhone to evaluate an equation. It's simpler, you don't need to create a NSPredicate, just the NSExpression.

Here is the docs to the compatible parseable functions: “BNF Definition of Cocoa Predicates”

@masters3d
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How to do this in swift? ;)

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