# Spinless Fermion correlator in Julia

Hi!
I would like to know if there is any example code to measure spinless fermion correlator using the Julia version of ITensor?

Also I would like to know if using 'commonind(psi[i],psi[i-1])' in Julia the same as using 'leftLinkIndex(psi,i)' in C++ ?

Thank You

Yes, you can use commonind(psi[i],psi[i-1]) or linkind(psi, i-1) to get the left link index of site i.