Beefy Boxes and Bandwidth Generously Provided by pair Networks
P is for Practical
 
PerlMonks  

Re^4: Grep Pattern

by LanX (Saint)
on Dec 15, 2018 at 01:36 UTC ( [id://1227287]=note: print w/replies, xml ) Need Help??


in reply to Re^3: Grep Pattern
in thread Grep Pattern

> that's elegant..

One should even be able to shorten it to (can't test right now)

 grep { (0,1,1,0)[ $_ % 4 ] } 0..12;

But it's not as DRY, cause you need to change the 4 if you change the list.

And of course it's not answering the OP s real question to filter any list.

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery FootballPerl is like chess, only without the dice

Replies are listed 'Best First'.
Re^5: Grep Pattern
by ikegami (Patriarch) on Dec 15, 2018 at 15:48 UTC

    I was about to say it also creates a shitload of scalars, but it doesn't. `0,1,1,0` repeatedly places the same 4 scalars on the stack. They are created at compile-time and associated with the opcode that returns them. Not bad

[reply]

In Section Seekers of Perl Wisdom

Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?

www.com | www.net | www.org
Node Status?
node history
Node Type: note [id://1227287]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? • Last hour • Other CB clients
Other Users?
Others sharing their wisdom with the Monastery: (4)
As of 2024-04-26 00:15 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found