Regular Expressions 101

Explanation

Pro

Negative Lookbehind(?<!\d)

\da digit

Group 1(\.)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

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.

26 tokens

(?<!\d)(\.)

New

.34
1.45
66+.33+22+.32
5+.22 5+0.22 5+.22

.34
1.45
66+.33+22+.32
5+.22 5+0.22 5+.22