Beefy Boxes and Bandwidth Generously Provided by pair Networks
more useful options

Re: Using grep in a scalar context

by choroba (Chancellor)
on Feb 06, 2013 at 12:52 UTC ( #1017414=note: print w/replies, xml ) Need Help??

in reply to Using grep in a scalar context

Works for me:
perl -E '@dipept = qw/XX AA BB CC DDAAD AAAAAAA/; $FMat[0][0] = grep(/ +AA/, @dipept); say $FMat[0][0]' 3
The documentation of grep clearly states:
In scalar context, returns the number of times the expression was true.
What input do you have? What output do you expect?
لսႽ ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

Replies are listed 'Best First'.
Re^2: Using grep in a scalar context
by newbie1991 (Acolyte) on Feb 06, 2013 at 13:37 UTC
    My input is a string of amino acid bases, essentially it looks like MHDLKNDHASDRWT and I am counting pair occurrences throughout. MH HD DL LK KN ND are all accepted and should be counted.

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1017414]
erix denies everything
[shmem]: erix: bad idea. PerlMonks is based on everything
[robby_dobby]: shmem:everything2
robby_dobby says Sorry and points to his boredom
[shmem]: robby_dobby: since everything is everything, it is thus also everything2. And everything2 is based on... you name it.
[Corion]: Mhhmmm. I just had to remind two contractos of their priorities from my point of view. This felt somewhat like getting my godson+siblings to clean their room, including the evil eye I threw them ;)

How do I use this? | Other CB clients
Other Users?
Others browsing the Monastery: (10)
As of 2017-04-25 13:29 GMT
Find Nodes?
    Voting Booth?
    I'm a fool:

    Results (454 votes). Check out past polls.