Regular Expressions 101

Explanation

Pro

^start of line

Group negative(?<negative>\-?)

\-?optionally matches the literal - (45₁₀ / 55₈ / 2D₁₆)

Group preceding(?<preceding>0?)

0?optionally matches the literal 0 (48₁₀ / 60₈ / 30₁₆)

Group main(?<main>[0-9]+\.??[0-9]*?)

Character Class[0-9]+

+matches at least one character from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

\.??optionally matches the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[0-9]*?

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

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Group trailing(?<trailing>\.?0*)

\.?optionally matches the literal . (46₁₀ / 56₈ / 2E₁₆)

0*the literal 0 (48₁₀ / 60₈ / 30₁₆) , repeated any number of times

$end of line

Global pattern flags

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

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

Detailed match information will be displayed here automatically.

26 tokens

^(?<negative>\-?)(?<preceding>0?)(?<main>[0-9]+\.??[0-9]*?)(?<trailing>\.?0*)$

New

$1$3