Regular Expressions 101

1st Alternative\.0+$

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

0+the literal 0 (48₁₀ / 60₈ / 30₁₆) , repeated at least once

$end of line

2nd Alternative^(-)?0+(?=\.)

^start of line

Group 1(-)?

?repeats the group contents below at most once:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

0+the literal 0 (48₁₀ / 60₈ / 30₁₆) , repeated at least once

Positive Lookahead(?=\.)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

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.

Search reference

Regular Expression

\.0+$|^(-)?0+(?=\.)

New

2.0
3.00
-4.0
0.00
-0.00
0.03
2.01
0.001
-0.03
101

$1