Function extern_spec_T_From__refmut__slice_T_Vec_T_from 

pub fn extern_spec_T_From__refmut__slice_T_Vec_T_from<T: Clone>(
    s: &mut [T],
) -> Vec<T>

extern spec for Vec<T>::from

This is not a real function: its only use is for documentation.

ensures

result@.len() == s@.len()

ensures

forall<i> 0 <= i && i < s@.len() ==> <T as Clone>::clone.postcondition((&s@[i],), result@[i])

ensures

^s == *s