Beefy Boxes and Bandwidth Generously Provided by pair Networks
XP is just a number
 
PerlMonks  

Re^2: matrix - creating total row/column

by GertMT (Friar)
on Oct 15, 2009 at 21:45 UTC ( #801441=note: print w/replies, xml ) Need Help??


in reply to Re: matrix - creating total row/column
in thread matrix - creating total row/column

this worked out very nice. Thank you very much. A bit puzzled though..

I understand that for my $i (keys %from_to_bytes) {should be read as: for all members of the family (Fred, Wilma and so on).

However I remain in trouble reading the remaining two lines:

for my $j (keys %{ $from_to_bytes{$i} }) { $total_col{$j} += $from_to_bytes{$i}->{$j};
It works but I'd like to understand as well.

Using hashes maybe efficient, learning how to use them takes some time for me.

Gert

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://801441]
help
Chatterbox?
and all is quiet...

How do I use this? | Other CB clients
Other Users?
Others chilling in the Monastery: (9)
As of 2016-12-02 20:04 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    On a regular basis, I'm most likely to spy upon:













    Results (49 votes). Check out past polls.