Regular expression and script optimisation

[Padmavathy]

Can using regular expression for a specific property value increase the object identification speed?

[supputuri]

I feel there there 2 posibilities
1) might increase the time to identify if you are depending on only regular expression (if you have same kind of objects )
2) if you are using regular expressions along with some other properties which might helpful in filtering will reduce the identification time.
So one should be careful while using regular expressions.
Hope this is helpful, let us know if you need any further explanation.