Regular Expressions 101

Explanation

Pro

Character Class[oO]

othe literal o (111₁₀ / 157₈ / 6F₁₆) (case sensitive)

Othe literal O (79₁₀ / 117₈ / 4F₁₆) (case sensitive)

Character Class[.,]

.the literal . (46₁₀ / 56₈ / 2E₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\d+a Unicode decimal digit, repeated at least once

Negative Lookahead(?![.,]?\d)

Character Class[.,]?

?matches at most one character from the set below:

.the literal . (46₁₀ / 56₈ / 2E₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\da Unicode decimal digit

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

[oO][.,]\d+(?![.,]?\d)

New

hcto,231 hcto.12

 I don't want to capture if the 'o' character if followed by a decimal number eg: 'wordo.23.12' or 'wordo,23,12'.