I am trying to capture the dollar amount from each of these lines:
On December 31, 2018, I had $1 thousand.
I had $5 million on December 31, 2018.
The amount of money available was $5,000,000 based on the information provided.
The family, on December 31, 2018, held approximately $3 billion in cash.
I have tried using
(\$\d .\w )
but it only captures the $1 thousand, $3 million, $5,000 or $3 billion. The entire dollar amount from option 2 isn't captured.
CodePudding user response：
How about (\$\d ( \w |[\d,] ))?
https://regex101.com/r/LlnUPj/1
CodePudding user response：
The pattern (\$\d .\w ) does not fully match $5,000,000 as the dot (that can match any character, so also a comma) only matches once in the pattern and \w and \d do not match a comma.
Note that \w matches 1 word characters and can for example also match $5 test
For a match only, you don't need a capture group. You could make the pattern a bit more specific and extend it accordingly:
\$\d{1,3}(?:,\d{3})*(?:\s (?:thousand|[mb]illion))?
The pattern matches:
\$Match$\d{1,3}(?:,\d{3})*match 1-3 digits and optionally repeat,and 3 digits(?:Non capture group\sMatch 1 whitespace chars(?:thousand|[mb]illion)Match either thousand, million or billion
)?Close the non capture group and make it optional
See a regex demo.