Function mrb_get_args 

pub unsafe extern "C" fn mrb_get_args(
    mrb: *mut mrb_state,
    format: mrb_args_format,
    ...
) -> mrb_int

Retrieve arguments from mrb_state.

@param mrb The current MRuby state. @param format is a list of format specifiers @param … The passing variadic arguments must be a pointer of retrieving type. @return the number of arguments retrieved. @see mrb_args_format @see mrb_kwargs