Beefy Boxes and Bandwidth Generously Provided by pair Networks
Just another Perl shrine

Re^3: Using grep in a scalar context

by tobyink (Abbot)
on Feb 07, 2013 at 12:44 UTC ( #1017645=note: print w/replies, xml ) Need Help??

in reply to Re^2: Using grep in a scalar context
in thread Using grep in a scalar context

I simply didn't think about doing it that way. I could probably count the number of times I've used map in a scalar context on my fingers.

That said, given that the original question was about gene sequences, which can be pretty long strings, it seems preferable to avoid the creation of a temporary array containing all matches. Whether that's an important concern or not depends on many factors (typical number of matches expected; typical length of matched strings; etc).

package Cow { use Moo; has name => (is => 'lazy', default => sub { 'Mooington' }) } say Cow->new->name

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1017645]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others drinking their drinks and smoking their pipes about the Monastery: (4)
As of 2016-10-22 02:16 GMT
Find Nodes?
    Voting Booth?
    How many different varieties (color, size, etc) of socks do you have in your sock drawer?

    Results (291 votes). Check out past polls.