Regular Expressions 101

Group 1(\.0*|(?<=(\..*))0*)

1st Alternative\.0*

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

0*the literal 0 (48₁₀ / 60₈ / 30₁₆) , repeated any number of times

2nd Alternative(?<=(\..*))0*

Positive Lookbehind(?<=(\..*))

Group 2(\..*)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

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

0*the literal 0 (48₁₀ / 60₈ / 30₁₆) , repeated any number of times

$end of line

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

Regular Expression

(\.0*|(?<=(\..*))0*)$

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