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Added stackoverflow.com link
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@davedelong
davedelong committed Sep 18, 2011
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Expand Up @@ -161,6 +161,8 @@ You can create your own aliases as well. If "`hacoversin`" is too long to type


Simply copy the "DDMathParser" subfolder into your project, `#import "DDMathParser.h"`, and you're good to go. A demo target is included as part of the project. It shows how to evaluate a user-entered string, with support for variables. Simply copy the "DDMathParser" subfolder into your project, `#import "DDMathParser.h"`, and you're good to go. A demo target is included as part of the project. It shows how to evaluate a user-entered string, with support for variables.


Also, [this question on StackOverflow.com](http://stackoverflow.com/q/6975796/115730) has an excellent write-up on how to include DDMathParser as a submodule in your git repository.

There are several ways to evaluate strings, depending on how much customization you want to do. Most of these options require an `NSError **` parameter, although some do not. There are several ways to evaluate strings, depending on how much customization you want to do. Most of these options require an `NSError **` parameter, although some do not.


- If you use one of the options that does *not* accept an `NSError **`, then any tokenization, parsing, or evaluation errors will be `NSLog`ged. - If you use one of the options that does *not* accept an `NSError **`, then any tokenization, parsing, or evaluation errors will be `NSLog`ged.
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