Regular Expressions 101

1st Alternative\d*\.\d+[fF]?

\d*a digit, repeated any number of times

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

Character Class[fF]?

?matches at most one character from the set below:

fthe literal f (102₁₀ / 146₈ / 66₁₆) (case sensitive)

Fthe literal F (70₁₀ / 106₈ / 46₁₆) (case sensitive)

2nd Alternative\d+\.\d*[fF]?

\d+a digit, repeated at least once

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d*a digit, repeated any number of times

Character Class[fF]?

?matches at most one character from the set below:

fthe literal f (102₁₀ / 146₈ / 66₁₆) (case sensitive)

Fthe literal F (70₁₀ / 106₈ / 46₁₆) (case sensitive)

3rd Alternative\d+[lLfF]?

\d+a digit, repeated at least once

Character Class[lLfF]?

?matches at most one character from the set below:

lthe literal l (108₁₀ / 154₈ / 6C₁₆) (case sensitive)

Lthe literal L (76₁₀ / 114₈ / 4C₁₆) (case sensitive)

fthe literal f (102₁₀ / 146₈ / 66₁₆) (case sensitive)

Fthe literal F (70₁₀ / 106₈ / 46₁₆) (case sensitive)

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

\d*\.\d+[fF]?|\d+\.\d*[fF]?|\d+[lLfF]?

New

42L 12 x 3.4f 6l 3.3 0F L F .2F 0.