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Re: Convert String into Expression

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Re: Convert String into Expression

Subject: Re: Convert String into Expression
From: Philip Riggs <email@hidden>
Date: Fri, 14 Jan 2005 11:21:46 -0700

On Jan 14, 2005, at 4:57 AM, email@hidden wrote:

I'm trying to find a way to convert a string into a mathematical expression. For example, the string "4 + 5" would return the numeric value 9. Any hint ?

In the O'Reilly book "Building Cocoa Applications: A Step By Step Guide" there is a project that uses bison to build a fully functional calculator. Either read that chapter, or you can download the example code from the O'Reilly site and figure it out.

Philip

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