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I'm arranging my methods into groups using #pragma mark in implementation. But sometimes, the method implementation code appears below the code that calls this method, and I'm getting "Instance method not found" warnings. It happens when I'm using private methods. How to fix that?
423
This declaration makes that program available to be called by other programs even before the program definition. Remember that both procedures and functions have a header and a body. A forward declaration consists simply of the program header followed by a semicolon (;). This construction is called the module header.
To write a forward declaration for a function, we use a function declaration statement (also called a function prototype). The function declaration consists of the function header (the function's return type, name, and parameter types), terminated with a semicolon. The function body is not included in the declaration.
A forward declaration tells the compiler about the existence of an entity before actually defining the entity. Forward declarations can also be used with other entity in C++, such as functions, variables and user-defined types.
Generally you would include forward declarations in a header file and then include that header file in the same way that iostream is included.
Simplest method is to use a anonymous category. Add something like this to the top of your .m file, before your @implementation:
@interface MyClass()
- (void)myPrivateMethod;
@end
In your Class.m implementation file, you can add an interface section at the beginning and declare private functions in there:
@interface YourClassName (private)
-(void)aPrivateMethod:(NSString*)aParameter;
...
@end
@implementation YourClassName
...
@end
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