How to define several variable types in one .h file using `typedef NS_ENUM`

Question

I have used typedef NS_ENUM to reorganise data constants in old code. Using an approach found here every typedef is declared in a single .h

Answer 1

Defining different enums in one .h .. like just add it one file.

typedef NS_ENUM(NSInteger, MARGIN)
{
    MARGIN_Top                          =  10,
    MARGIN_Side                         =  10,
    MARGIN_PanelBaseLine                =   1
};


typedef NS_ENUM(long, ENUM_2)
{
    ENUM_2_1    = 10,
    ENUM_2_2    = 20,
    ENUM_2_3    = 30,
};

typedef NS_ENUM(long, ENUM_3)
{
    ENUM_3_1    = 10,
    ENUM_3_2    = 20,
    ENUM_3_3    = 30,
};

// And so on as many as you want

And your second question, Enums can only be of the integral data types like, int, long, long long, unsigned int, short etc... You can't use any Non-Integral types like float or double or not even any objective c types.

You can do enum mapping for float values like this https://stackoverflow.com/a/8867169/1825618