Regular Expressions 101

Explanation
Pro

Positive Lookahead(?=.*[0-9])

.*any character (except for line terminators), repeated any number of times

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Positive Lookahead(?=.*[a-z])

.*any character (except for line terminators), repeated any number of times

Character Class[a-z]

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

Group 1(\w+(?:[-.]\w+)+)

\w+any word character, repeated at least once

Non-Capturing Group(?:[-.]\w+)+

+repeats the group contents below at least once:

Character Class[-.]

-the literal - (45₁₀ / 55₈ / 2D₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\w+any word character, repeated at least once

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

25 tokens

(?=.*[0-9])(?=.*[a-z])(\w+(?:[-.]\w+)+)

New

aaa-ddd 111-222 3370.01b, 6510.01.b, m-5510.30, and drm-2013-c-004914 hello, sk8, and mixed-up