Regular Expressions 101

Explanation

Pro

Group 1([+-])?

?repeats the group contents below at most once:

Character Class[+-]

+the literal + (43₁₀ / 53₈ / 2B₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group 2(\d\d)

\da digit

Non-Capturing Group(?:(:?)|\*)

1st Alternative(:?)

Group 3(:?)

:?optionally matches the literal : (58₁₀ / 72₈ / 3A₁₆)

2nd Alternative\*

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

Group 4([0-5]\d)

Character Class[0-5]

0-5one character from 0 (48₁₀) to 5 (53₁₀)

\da digit

Non-Capturing Group(?:(?:(\3)|\')((?:[0-5]\d)(?:\.\d+)?))?

?repeats the group contents below at most once:

Non-Capturing Group(?:(\3)|\')

1st Alternative(\3)

Group 5(\3)

\3the text saved by group 3

2nd Alternative\'

\'the literal ' (39₁₀ / 47₈ / 27₁₆)

Group 6((?:[0-5]\d)(?:\.\d+)?)

Non-Capturing Group(?:[0-5]\d)

Character Class[0-5]

0-5one character from 0 (48₁₀) to 5 (53₁₀)

\da digit

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

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

Group 7([NS])?

?repeats the group contents below at most once:

Character Class[NS]

Nthe literal N (78₁₀ / 116₈ / 4E₁₆) (case sensitive)

Sthe literal S (83₁₀ / 123₈ / 53₁₆) (case sensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 8([+-])?

?repeats the group contents below at most once:

Character Class[+-]

+the literal + (43₁₀ / 53₈ / 2B₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group 9([01]\d\d)

Character Class[01]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

\da digit

\3the text saved by group 3

Group 10([0-5]\d)

Character Class[0-5]

\da digit

Non-Capturing Group(?:\3((?:[0-5]\d)(?:\.\d+)?))?

Group 12([EW])?

\ban ASCII word boundary

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

Unit Test Summary

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Quick Reference

25 tokens

Regular Expression

([+-])?(\d\d)(?:(:?)|\*)([0-5]\d)(?:(?:(\3)|\')((?:[0-5]\d)(?:\.\d+)?))?([NS])?\/([+-])?([01]\d\d)\3([0-5]\d)(?:\3((?:[0-5]\d)(?:\.\d+)?))?([EW])?\b

Unit Tests

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