Regular Expressions 101

Explanation

Pro

1st Alternative((int|float|double)\s+([a-zA-z][a-zA-Z0-9]*(=?[0-9a-zA-Z]+)?)(,[a-zA-z][a-zA-Z0-9]*(=?[0-9a-zA-Z]+)?)*);

Group 1((int|float|double)\s+([a-zA-z][a-zA-Z0-9]*(=?[0-9a-zA-Z]+)?)(,[a-zA-z][a-zA-Z0-9]*(=?[0-9a-zA-Z]+)?)*)

Group 2(int|float|double)

1st Alternativeint

intthe literal text int (case sensitive)

2nd Alternativefloat

floatthe literal text float (case sensitive)

3rd Alternativedouble

doublethe literal text double (case sensitive)

\s+any whitespace character, repeated at least once

Group 3([a-zA-z][a-zA-Z0-9]*(=?[0-9a-zA-Z]+)?)

Character Class[a-zA-z]

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-zone character from A (65₁₀) to z (122₁₀) (case sensitive)

Character Class[a-zA-Z0-9]*

*matches any number of characters from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

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

Group 4(=?[0-9a-zA-Z]+)?

?repeats the group contents below at most once:

=?optionally matches the literal = (61₁₀ / 75₈ / 3D₁₆)

Character Class[0-9a-zA-Z]+

+matches at least one character from the set below:

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

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Group 5(,[a-zA-z][a-zA-Z0-9]*(=?[0-9a-zA-Z]+)?)*

*repeats the group contents below any number of times:

,the literal , (44₁₀ / 54₈ / 2C₁₆)

Character Class[a-zA-z]

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-zone character from A (65₁₀) to z (122₁₀) (case sensitive)

Character Class[a-zA-Z0-9]*

*matches any number of characters from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

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

Group 6(=?[0-9a-zA-Z]+)?

?repeats the group contents below at most once:

=?optionally matches the literal = (61₁₀ / 75₈ / 3D₁₆)

Character Class[0-9a-zA-Z]+

+matches at least one character from the set below:

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

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

;the literal ; (59₁₀ / 73₈ / 3B₁₆)

2nd AlternativeString\s+(([a-zA-z][a-zA-Z0-9]*(=?'[\sa-zA-Z0-9]*')?)(,[a-zA-z][a-zA-Z0-9]*(='[\sa-zA-Z0-9]*')?)*);

Stringthe literal text String (case sensitive)

\s+any whitespace character, repeated at least once

Group 7(([a-zA-z][a-zA-Z0-9]*(=?'[\sa-zA-Z0-9]*')?)(,[a-zA-z][a-zA-Z0-9]*(='[\sa-zA-Z0-9]*')?)*)

Group 8([a-zA-z][a-zA-Z0-9]*(=?'[\sa-zA-Z0-9]*')?)

Character Class[a-zA-z]

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-zone character from A (65₁₀) to z (122₁₀) (case sensitive)

Character Class[a-zA-Z0-9]*

*matches any number of characters from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

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

Group 9(=?'[\sa-zA-Z0-9]*')?

?repeats the group contents below at most once:

=?optionally matches the literal = (61₁₀ / 75₈ / 3D₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

Character Class[\sa-zA-Z0-9]*

*matches any number of characters from the set below:

\sany whitespace character

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

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

'the literal ' (39₁₀ / 47₈ / 27₁₆)

Group 10(,[a-zA-z][a-zA-Z0-9]*(='[\sa-zA-Z0-9]*')?)*

*repeats the group contents below any number of times:

,the literal , (44₁₀ / 54₈ / 2C₁₆)

Character Class[a-zA-z]

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-zone character from A (65₁₀) to z (122₁₀) (case sensitive)

Character Class[a-zA-Z0-9]*

Group 11(='[\sa-zA-Z0-9]*')?

;the literal ; (59₁₀ / 73₈ / 3B₁₆)

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

Match Information

Detailed match information will be displayed here automatically.

Quick Reference

25 tokens

Regular Expression

((int|float|double)\s+([a-zA-z][a-zA-Z0-9]*(=?[0-9a-zA-Z]+)?)(,[a-zA-z][a-zA-Z0-9]*(=?[0-9a-zA-Z]+)?)*);|String\s+(([a-zA-z][a-zA-Z0-9]*(=?'[\sa-zA-Z0-9]*')?)(,[a-zA-z][a-zA-Z0-9]*(='[\sa-zA-Z0-9]*')?)*);

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