Working with regular expressions and "$"?

Ruby
1

Hi all

I remember to have read somewhere that the matching results of a regular
expression match like

string1 =~ /some_expression/

is stored in “$”. I couldn’t find documentation related to this (it’s a
little hard to search google for “ruby regexp $”), so maybe someone has
some information for me? :slight_smile:

Thanks
Josh

2

On Nov 23, 8:50 am, Joshua M. [email protected] wrote:

Hi all

I remember to have read somewhere that the matching results of a regular
expression match like

string1 =~ /some_expression/

is stored in “$”. I couldn’t find documentation related to this (it’s a
little hard to search google for “ruby regexp $”), so maybe someone has
some information for me? :slight_smile:

If you have the 2nd edition of the pick-axe book, in chapter 22,
there’s a section called “Variables and Constants” which give a slew
of variables.

I don’t want to type them all in. But it looks like you’re after
either $&, which provides the matching string, or $~, which provides
the MatchData object that describes the match.

Eric

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3

Thanks a lot :slight_smile:

4

On Nov 23, 2007 4:15 PM, Eric I. [email protected] wrote:

some information for me? :slight_smile:

If you have the 2nd edition of the pick-axe book, in chapter 22,
there’s a section called “Variables and Constants” which give a slew
of variables.

I don’t want to type them all in. But it looks like you’re after
either $&, which provides the matching string, or $~, which provides
the MatchData object that describes the match.