a lot of manual loops instead of findfirst in project! and others

[Krastanov]

Weirdly, findfirst seems slower...

function f1(stabilizer, qubit)
    anticommutes = 0
    r = length(stabilizer)
    for i in 1:r # The explicit loop is faster than anticommutes = findfirst(row->comm(pauli,stabilizer,row)!=0x0, 1:r); both do not allocate.
        if isZ(stabilizer,i,qubit)
            anticommutes = i
            break
        end
    end
    return anticommutes
end

function f2(stabilizer, qubit)
    r = length(stabilizer)
    findfirst(i->isZ(stabilizer,i,qubit), 1:r)
end
##
N = 1000
s = ghz(N);
##
@benchmark f1(_s, N) setup=(_s=copy(s))
##
@benchmark f2(_s, N) setup=(_s=copy(s))