Regular Expressions 101

Explanation

Pro

Group 1([A-Za-z_]\w*\b|[!\#\$%\&\*\+:\-\./<=>\?@\\\^_\|\~]+|[ \t,;\{\}\[\]`"'])

1st Alternative[A-Za-z_]\w*\b

Character Class[A-Za-z_]

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

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

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

\w*a Unicode word character, repeated any number of times

\ba Unicode word boundary

2nd Alternative[!\#\$%\&\*\+:\-\./<=>\?@\\\^_\|\~]+

Character Class[!\#\$%\&\*\+:\-\./<=>\?@\\\^_\|\~]+

+matches at least one character from the set below:

!the literal ! (33₁₀ / 41₈ / 21₁₆)

\#the literal # (35₁₀ / 43₈ / 23₁₆)

\$the literal $ (36₁₀ / 44₈ / 24₁₆)

%the literal % (37₁₀ / 45₈ / 25₁₆)

\&the literal & (38₁₀ / 46₈ / 26₁₆)

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

\+the literal + (43₁₀ / 53₈ / 2B₁₆)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

/the literal / (47₁₀ / 57₈ / 2F₁₆)

<the literal < (60₁₀ / 74₈ / 3C₁₆)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

\?the literal ? (63₁₀ / 77₈ / 3F₁₆)

@the literal @ (64₁₀ / 100₈ / 40₁₆)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

\^the literal ^ (94₁₀ / 136₈ / 5E₁₆)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

\|the literal | (124₁₀ / 174₈ / 7C₁₆)

\~the literal ~ (126₁₀ / 176₈ / 7E₁₆)

3rd Alternative[ \t,;\{\}\[\]`"']

Character Class[ \t,;\{\}\[\]`"']

the literal (32₁₀ / 40₈ / 20₁₆)

\ta tab character (ASCII 9)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

;the literal ; (59₁₀ / 73₈ / 3B₁₆)

\{the literal { (123₁₀ / 173₈ / 7B₁₆)

\}the literal } (125₁₀ / 175₈ / 7D₁₆)

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

`the literal ` (96₁₀ / 140₈ / 60₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

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

Unit Test Summary

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Quick Reference

25 tokens

Regular Expression

([A-Za-z_]\w*\b|[!\#\$%\&\*\+:\-\./<=>\?@\\\^_\|\~]+|[ \t\(\),;\{\}\[\]`"'])

Unit Tests

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