Regular Expressions 101

Pro

1st Alternative^[^\d\s]+(?=-)

^start of line

Negated Character Class[^\d\s]+

+matches at least one character outside the set below:

\da digit

\sany whitespace character

Positive Lookahead(?=-)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

2nd Alternative[^\d\s.]+(?!\d)

Negated Character Class[^\d\s.]+

+matches at least one character outside the set below:

\da digit

\sany whitespace character

.the literal . (46₁₀ / 56₈ / 2E₁₆)

Negative Lookahead(?!\d)

\da 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

^[^\d\s]+(?=-)|[^\d\s.]+(?!\d)

New

123A.478
123.48
123AX

--123.46
123A-.46
-123--.46
A-123-.46

123A.478
123.48
123AX

--123.46
123A-.46
-123--.46
A-123-.46