array splice to retrieve specific records

snehit.ar has asked for the wisdom of the Perl Monks concerning the following question:

Hello, I am working on a dashboard to display only 6 records(row) . In my array list i am passing a counter variable to set line number depends on the arrays count.To display the sorted records map with the line numbers in dashboard. If i have only 3 records in my array to display on dashboard ,i want to set others 3 records as blank . so my dashboard should show 3 records only and not the other 3 previously fetch records when my array had 6 records(row). Help me with the condition i can use for this ?

my @records;
my $count=0;
...get the records from xml nodes 

foreach node ... in nodelist{

$count ++;
#if ($count <= 6 ) {
 push @records, {
     line => $count,
     appname => $appname
     visible => "Yes",
}
#else
#{
#push @records, {
#     line => $count,
#     appname => "",
#     visible => "No",
#}
}
}
print Dumper \@records;
[download]

Thank you!

Comment on array splice to retrieve specific records Download Code

Replies are listed 'Best First'.
Re: array splice to retrieve specific records by Corion (Patriarch) on Jul 12, 2017 at 07:23 UTC
How would you do this without a computer? Once you have written down the steps to do this without a computer, write these steps in Perl. Please, do not treat this site as a code writing service. We expect you to do your work yourself. You can improve the quality of answers you get by showing runnable code which sets up the data in a simple way. For example, instead of a comment or pseudocode, just initialize your data with dummy data: `my @nodelist = ("dummy1", "dummy2", "dummy3", "dummy4");` [download]	[reply] [d/l]
Re: array splice to retrieve specific records by huck (Prior) on Jul 12, 2017 at 07:32 UTC
`while (scalar(@records)<6){push @records,{...};}`	[reply] [d/l]