在iPhone上实现GCMathParser [英] implementing GCMathParser on iphone

问题描述

我正在尝试将GCMathParser用于iPhone应用程序，但我找不到实现此框架的任何支持.人们一直说它简单而有点困惑，任何帮助将非常感谢！

i am trying to use the GCMathParser for an iphone application and i cannot find any support on implementing this framework. people keep saying its easy and im kinda confused, any help would be great thanks!

推荐答案

使用此功能需要进行两项更改:

There are two changes you need to make in order to use this:

1. 将#import <Cocoa/Cocoa.h>更改为#import <UIKit/UIKit.h>(您也可能会使用<Foundation/Foundation.h>逃脱)
2. 尝试再次编译.您会收到有关未知符号"pi"的错误.将其中三个出现的位置更改为M_PI(在<math.h>中为π定义的常数).

1. Change #import <Cocoa/Cocoa.h> to #import <UIKit/UIKit.h> (You could probably get away with using <Foundation/Foundation.h>, too)
2. Try to compile again. You'll get errors about an unknown symbol "pi". Change the three occurrences of those to M_PI (the constant defined in <math.h> for π).

您仍然会收到警告(关于不赞成使用的方法)，但是它将可以编译并正常工作.

You'll still get warnings (about deprecated methods), but it will compile and work.

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