Regular Expressions 101

Explanation
Pro

Character Class[a-z]

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

Character Class[:=]

:the literal : (58₁₀ / 72₈ / 3A₁₆)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

\h*any horizontal whitespace character, repeated any number of times

Group 1(\d+(?:[.,]\d+)?)

\d+a digit, repeated at least once

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

?repeats the group contents below at most once:

Character Class[.,]

.the literal . (46₁₀ / 56₈ / 2E₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\d+a digit, repeated at least once

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

Detailed match information will be displayed here automatically.

25 tokens

[a-z][:=]\h*(\d+(?:[.,]\d+)?)

New

a: 1 | b=2 ; c=3.2 / d=4,2