Re: why doesn't my array get extended?

By doing push @rrdgraph2, @rrdgraph0 you make the graph0 array as a whole an element of the graph2 array. You do not assign the values of the graph0 array to the graph2 array.
To do such could do:

foreach (@rrdgraph0) { push @rrdgraph2, $_; }
[download]

Now you push every element from graph0 to graph2
(I think this is what you meant...)

Sinister greetings.

Comment on Re: why doesn't my array get extended? Select or Download Code

Replies are listed 'Best First'.
Re: Re: why doesn't my array get extended? by davorg (Chancellor) on May 04, 2001 at 12:22 UTC
Er... this seems to contradict what `perldoc -f push` has to say on the subject... `push ARRAY,LIST Treats ARRAY as a stack, and pushes the values of LIST onto the end of ARRAY. The length of ARRAY increases by the length of LIST. Has the same effect as for $value (LIST) { $ARRAY[++$#ARRAY] = $value; } but is more efficient. Returns the new number of elements in the array.` [download] -- <http://www.dave.org.uk> "Perl makes the fun jobs fun and the boring jobs bearable" - me	[reply] [d/l]
Re: Re: why doesn't my array get extended? by hdp (Beadle) on May 05, 2001 at 21:11 UTC
That turns out not to be the case. To "make the graph0 array as a whole an element of the graph2 array", one would use something like `push @rrdgraph2, \@rrdgraph0`. `push @rrdgraph2, @rrdgraph0` does the same thing as your foreach loop, but is more efficient. I suggest reading perldsc at least so that you understand why your solution is incorrect. hdp.	[reply] [d/l] [select]