Regular Expressions 101

^start of line

Group major(?P<major>|[0-9]+)

1st Alternative — matches an empty string

2nd Alternative[0-9]+

Character Class[0-9]+

+matches at least one character from the set below:

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

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group minor(?P<minor>[0-9]+)

Character Class[0-9]+

+matches at least one character from the set below:

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

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group patch(?P<patch>|[0-9]+)

1st Alternative — matches an empty string

2nd Alternative[0-9]+

Character Class[0-9]+

+matches at least one character from the set below:

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

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Non-Capturing Group(?:(?P<GA>GA$)|(?P<PRO>PRO$)|(?P<SNAPSHOT>SNAPSHOT$)|(?P<RC>RC$))

1st Alternative(?P<GA>GA$)

Group GA(?P<GA>GA$)

GAthe literal text GA (case sensitive)

$end of line

2nd Alternative(?P<PRO>PRO$)

Group PRO(?P<PRO>PRO$)

PROthe literal text PRO (case sensitive)

$end of line

3rd Alternative(?P<SNAPSHOT>SNAPSHOT$)

Group SNAPSHOT(?P<SNAPSHOT>SNAPSHOT$)

SNAPSHOTthe literal text SNAPSHOT (case sensitive)

$end of line

4th Alternative(?P<RC>RC$)

Group RC(?P<RC>RC$)

RCthe literal text RC (case sensitive)

$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.

Search reference

Regular Expression

^(?P<major>|[0-9]+)\.(?P<minor>[0-9]+)\.(?P<patch>|[0-9]+)-(?:(?P<GA>GA$)|(?P<PRO>PRO$)|(?P<SNAPSHOT>SNAPSHOT$)|(?P<RC>RC$))$

Test String
New

1.2.6-RC
1.2.4-GA
1.2.6-PRO
1.2.6-SNAPSHOT

Regular Expression

Test StringNew

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Test String
New

Extraction
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