What would be a regular expression that would evaluate to true if the string has one or more letters anywhere in it.
For example:
1222a3999
would be true
a222aZaa
would be true
aaaAaaaa
would be true
but:
1111112())--
would be false
I tried: ^[a-zA-Z]+$
and [a-zA-Z]+
but neither work when there are any numbers and other characters in the string.