Did it in Io (was already doing Euler stuff), pretty similar: problem25 := method(digits, term := 0 n0 := BigNum with(0) n1 := BigN

Did it in Io (was already doing Euler stuff), pretty similar: problem25 := method(digits, term := 0 n0 := BigNum with(0) n1 := BigNum with(1) loop( n0 = n0 + n1 n1 = n0 - n1 if(n1 asString size >= digits, break) term = term + 1 ) term ) problem25(1000) println