Regular Expressions 101

Explanation

Pro

Non-Capturing Group(?:\G(?!^)|\b(?=(?:STREET|AVENUE|BOULEVARD)\b))

1st Alternative\G(?!^)

\Gstart of current search

Negative Lookahead(?!^)

^start of string

2nd Alternative\b(?=(?:STREET|AVENUE|BOULEVARD)\b)

\ban ASCII word boundary

Positive Lookahead(?=(?:STREET|AVENUE|BOULEVARD)\b)

Non-Capturing Group(?:STREET|AVENUE|BOULEVARD)

1st AlternativeSTREET

STREETthe literal text STREET (case sensitive)

2nd AlternativeAVENUE

AVENUEthe literal text AVENUE (case sensitive)

3rd AlternativeBOULEVARD

BOULEVARDthe literal text BOULEVARD (case sensitive)

\ban ASCII word boundary

Character Class[A-Z]*?

*?matches any number of characters from the set below:

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

\Kresets the starting point of the reported match. Any previously consumed characters are no longer included in the final match

Non-Capturing Group(?:TREE|E(?:NU)?|OU|AR)

1st AlternativeTREE

TREEthe literal text TREE (case sensitive)

2nd AlternativeE(?:NU)?

Ethe literal E (69₁₀ / 105₈ / 45₁₆) (case sensitive)

Non-Capturing Group(?:NU)?

?repeats the group contents below at most once:

NUthe literal text NU (case sensitive)

3rd AlternativeOU

OUthe literal text OU (case sensitive)

4th AlternativeAR

ARthe literal text AR (case sensitive)

\Bnot an ASCII word boundary

Global pattern flags

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

x modifier: extended. Ignores unescaped whitespace and comments outside character classes

Detailed match information will be displayed here automatically.

25 tokens


(?:\G(?!^)|\b(?=(?:STREET|AVENUE|BOULEVARD)\b))[A-Z]*?\K(?:TREE|E(?:NU)?|OU|AR)\B

New

STREET|AVENUE|BOULEVARD

STREET|AVENUE|BOULEVARD