Regular Expressions 101

Pro

Negative Lookbehind(?<!\S)

\Sany character that is not Unicode whitespace

Negated Character Class[^.]*

*matches any number of characters outside the set below:

.the literal . (46₁₀ / 56₈ / 2E₁₆)

Non-Capturing Group(?:(?:\.\d)[^.]*)*

*repeats the group contents below any number of times:

Non-Capturing Group(?:\.\d)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\da Unicode decimal digit

Negated Character Class[^.]*

*matches any number of characters outside the set below:

.the literal . (46₁₀ / 56₈ / 2E₁₆)

examplethe literal text example (case sensitive)

Negated Character Class[^.]*

*matches any number of characters outside the set below:

.the literal . (46₁₀ / 56₈ / 2E₁₆)

Non-Capturing Group(?:(?:\.\d)[^.]*)*

*repeats the group contents below any number of times:

Non-Capturing Group(?:\.\d)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\da Unicode decimal digit

Negated Character Class[^.]*

*matches any number of characters outside the set below:

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\.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.

25 tokens

(?<!\S)[^.]*(?:(?:\.\d)[^.]*)*example[^.]*(?:(?:\.\d)[^.]*)*\.

New

Hello. This is 4.815 an example. This is an example. This is an 4.815 example.