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Chapter 2 - Mixed Mode Manager / Mixed Mode Manager Reference

Constants

Routine Descriptor Flags

The routineDescriptorFlags field of a routine descriptor contains a set of routine descriptor flags that specify attributes of the described routine. You can use constants
to specify the routine descriptor flags. In general, you should use the constant kSelectorsAreNotIndexable when constructing your own routine descriptors; the value kSelectorsAreIndexable is reserved for use by Apple.

enum {
   kSelectorsAreNotIndexable     = (RDFlagsType)0x00,
   kSelectorsAreIndexable        = (RDFlagsType)0x01
};

Constant descriptions

kSelectorsAreNotIndexable

For dispatched routines, the recognized routine selectors are
not contiguous.

kSelectorsAreIndexable

For dispatched routines, the recognized routine selectors are contiguous and therefore indexable.