Beefy Boxes and Bandwidth Generously Provided by pair Networks
Pathologically Eclectic Rubbish Lister

Re: Re: Perl Idioms Explained - my $string = do { local $/; };

by pbeckingham (Parson)
on Mar 10, 2004 at 19:01 UTC ( #335562=note: print w/replies, xml ) Need Help??

in reply to Re: Perl Idioms Explained - my $string = do { local $/; <FILEHANDLE> };
in thread Perl Idioms Explained - my $string = do { local $/; <FILEHANDLE> };

I have been using
my $slurp = join '', <FH>;
as well, but having had the idiom explained to me, I realize that this approach is potentially doing more work than the idiom. It makes sense to me that reading from a file handle in list context causes a list to be returned, which is then collapsed by the join, and that this approach is probably not as efficient.

I assume that the idiom is achieving this down in the (fast) IO layer, and the cost of the block, and the localized variable are lower.

  • Comment on Re: Re: Perl Idioms Explained - my $string = do { local $/; <FILEHANDLE> };
  • Download Code

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://335562]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others having an uproarious good time at the Monastery: (7)
As of 2016-10-27 08:41 GMT
Find Nodes?
    Voting Booth?
    How many different varieties (color, size, etc) of socks do you have in your sock drawer?

    Results (355 votes). Check out past polls.