Keep It Simple, Stupid PerlMonks

### Re: Toggling vars in each iterations

by blue_cowdawg (Monsignor)
 on Jan 17, 2013 at 02:23 UTC ( #1013679=note: print w/replies, xml ) Need Help??

in reply to Toggling vars in each iterations

Post what you've tried. I barely understand what you are asking...

foreach my \$ix(1..10) { \$var=(\$ix%2? \$value1:\$value2); \$var=(\$ix%s? \$value2:\$value1);
is that what you are after perhaps?

Peter L. Berghold -- Unix Professional
Peter -at- Berghold -dot- Net; AOL IM redcowdawg Yahoo IM: blue_cowdawg

Replies are listed 'Best First'.
Re^2: Toggling vars in each iterations
by akki_best (Initiate) on Jan 17, 2013 at 02:34 UTC
Sorry my bad: Here is what I am looking for: In below example I have \$var1 value as 10 and \$var2 as 5. For each iteration I want values to switch between these two. i.e. Iteration 1: \$var1=10 and \$var2=5 Iteration 2: \$var1=5 and \$var2=10 Iteration 3: \$var1=10 and \$var2=5 Iteration 4: \$var1=5 and \$var2=10 so on and so forth. I tried something like below which is incorrect use strict; use warnings; my \$var1=10; my \$var2=5; foreach(1..10) { \$var1=\$var2; \$var2=\$var1; print "Var1 is:\$var1\n"; print "Var2 is:\$var2\n"; }

Hello akki_best, and welcome to the Monastery!

\$var1 = \$var2; \$var2 = \$var1;

That won’t work, because by the time you get to the second command, the value of \$var1 has already been overwritten by the first command. But in Perl, swapping these values is as simple as:

(\$var1, \$var2) = (\$var2, \$var1);

P.S. Please format your code using <code> tags. See Markup in the Monastery.

Hope that helps,

 Athanasius <°(((>< contra mundum Iustus alius egestas vitae, eros Piratica,

Create A New User
Node Status?
node history
Node Type: note [id://1013679]
help
Chatterbox?
and all is quiet...

How do I use this? | Other CB clients
Other Users?
Others cooling their heels in the Monastery: (4)
As of 2018-05-23 05:45 GMT
Sections?
Information?
Find Nodes?
Leftovers?
Voting Booth?
World peace can best be achieved by:

Results (166 votes). Check out past polls.

Notices?