Hello, I'm looking for a Perl Regular expression that recognizes numbers (integers, fractions, scientific, etc.). Examples (surely there are other possibilities which are not covered): 7 0.49 -25 -3.134954 .57 3E9 -.3e-19 Thanks. -- Shlomo Yona shlomo at cs.haifa.ac.il http://cs.haifa.ac.il/~shlomo/