Regular Expressions 101

Group 1(([A-Za-z]+)|((?:[+-])?[0-9.]+)|([&=><\|!]+)|(\S))

1st Alternative([A-Za-z]+)

Group 2([A-Za-z]+)

Character Class[A-Za-z]+

+matches at least one character from the set below:

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

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

2nd Alternative((?:[+-])?[0-9.]+)

Group 3((?:[+-])?[0-9.]+)

Non-Capturing Group(?:[+-])?

?repeats the group contents below at most once:

Character Class[+-]

+the literal + (43₁₀ / 53₈ / 2B₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

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)

3rd Alternative([&=><\|!]+)

Group 4([&=><\|!]+)

Character Class[&=><\|!]+

+matches at least one character from the set below:

&the literal & (38₁₀ / 46₈ / 26₁₆)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\|the literal | (124₁₀ / 174₈ / 7C₁₆)

!the literal ! (33₁₀ / 41₈ / 21₁₆)

4th Alternative(\S)

Group 5(\S)

\Sany non-whitespace character

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

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Search reference

Regular Expression

(([A-Za-z]+)|((?:[+-])?[0-9.]+)|([&=><\|!]+)|(\S))

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