extendr_ffi::altrep

Function R_set_altrep_Length_method

Source 
pub unsafe extern "C" fn R_set_altrep_Length_method(
    cls: R_altrep_class_t,
    fun: R_altrep_Length_method_t,
)
Expand description

Sets the function pointer inside the ALTREP class object. Currently, these methods are common to all ALTREP classes. There is no facility for unregistering ALTREP classes, so once a function pointer is set from a package shared library, it must not be unloaded.