Regular Expressions 101

^start of line

Group field1(?<field1>\S+)

\S+any non-whitespace character, repeated at least once

Group 2(\s+(?<field2>\S+))?

?repeats the group contents below at most once:

\s+any whitespace character, repeated at least once

Group field2(?<field2>\S+)

\S+any non-whitespace character, repeated at least once

\s+any whitespace character, repeated at least once

Group field3(?<field3>\S+)

\S+any non-whitespace character, repeated at least once

$end of line

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

No unit tests · Add a test to get started

25 tokens

Regular Expression

^(?<field1>\S+)(\s+(?<field2>\S+))?\s+(?<field3>\S+)$

There are no unit tests, click to add some.