Regular Expressions 101

Pro

^start of line

Non-Capturing Group(?:.*\bOptional\b.*\s=\s.*|(?!.*\bOptional\b).+)

1st Alternative.*\bOptional\b.*\s=\s.*

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

\ban ASCII word boundary

Optionalthe literal text Optional (case sensitive)

\ban ASCII word boundary

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

\sany whitespace character

=the literal = (61₁₀ / 75₈ / 3D₁₆)

\sany whitespace character

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

2nd Alternative(?!.*\bOptional\b).+

Negative Lookahead(?!.*\bOptional\b)

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

\ban ASCII word boundary

Optionalthe literal text Optional (case sensitive)

\ban ASCII word boundary

.+any character (except for line terminators), 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

No unit tests · Add a test to get started

25 tokens

^(?:.*\bOptional\b.*\s=\s.*|(?!.*\bOptional\b).+)

There are no unit tests, click to add some.