Tagged Questions
2
votes
6answers
64 views
Perl - Check if any elements in each different array matches a variable
I have a problem I am hoping someone can help with (greatly simplified for the purposes of explaining what I am trying to do)...
I have three different arrays:
my @array1 = ("DOG","CAT","HAMSTER");
...
1
vote
2answers
49 views
Trying to understand context in arrays/list in Perl
I am trying to understand the context (array/list/scalar) in Perl.
I tried the following:
@array = qw (john bill george);
print @array;
print "\n";
@sorted = sort (array);
print @sorted;
...
0
votes
5answers
96 views
Array lowercase
I'm new to Perl and I've ran into a little problem. I'm trying to pick one value out of an array to make it lowercase.
E.g.
my @letters = qw(A B C D E F F A S D F E S F);
Now I want to pick the ...
1
vote
3answers
80 views
Arrays and negative indexes in Perl
I am newbie in Perl and I am reading about arrays.
As I understand the arrays expand automatically as needed (cool!)
But I also read that we can use negative indexes to access the arrays in reverse ...
-3
votes
1answer
45 views
Verify if email sender has permission to send to a certain address
I am forced to implement a sender policy in qmail.
I have a file describing the policies:
[email protected]:*@domain1.com,[email protected],[email protected]
[email protected]:*@*
[email protected]:
This ...
0
votes
2answers
36 views
how to avoid pushing duplicate values into an array in perl
how to avoid pushing duplicate values into an array in Perl
i need to add unique elements in an array from inputs which contains several duplicate values.
1
vote
2answers
48 views
Writing contents of an array to txt file in perl
The output I'm trying to achieve would look like this:
Name age gpa
for every element in each array, however when I write the contents of the array to a file it over writes somewhere and is ...
-2
votes
5answers
63 views
Taking the average of many N sized arrays
Can anyone help me fix this? I'm trying to write a script that takes the sum of many N sized arrays. In the example below the average of the arrays would be (1,2) since (0+1+2+1)/4 = 1 and (2+3+2+1)/4 ...
0
votes
2answers
52 views
Subroutine that takes average of one or more arrays
I'm working on a subroutine that takes the average of 1 or more arrays. I would like to do this without using a module.
use strict;
use warnings;
use List::Util 'sum';
my @w = (0, 2);
my @x = (1, ...
1
vote
2answers
91 views
Perl grep two arrays
I have one array filled with short strings (@pos), and a second larger array (@exome). I want to search the second array for any match with strings from the first. The goal is to print all lines from ...
2
votes
1answer
65 views
Unresolvable perl error?
use strict;
my @array = ();
my @nums = [3, 4];
foreach my $i ( 0 .. 10 ) {
foreach my $j ( 0 .. 10 ) {
$nums[0] = 4+1;
push @{ $array[$i] }, @nums;
}
}
print $array[6][2][0]. ...
2
votes
3answers
67 views
Perl: quick replacing of occurrences of multiple words in an array
Sorry if it is a duplicate topic, but I've searched inside the forum and I've only found similar but not identical questions.
My problem is:
I've got an array of strings like this one:
@array = ...
3
votes
2answers
58 views
Join elements of two arrays and create a result array in perl
Basically what i need if i have two arrays like below:
my @a=("a","b","c");
my @z=("x","y","z");
I want the result array to be:
("a x","b y","c z")
pre condition is the number is elements in ...
0
votes
1answer
61 views
Can someone explain this bug to me? [closed]
I'm trying to compare two arrays using the smart ~~ match operator. However, it's not working properly. I think I may have I've found a bug in it. See below.
use strict; use warnings;
use ...
0
votes
2answers
40 views
Perl, check if last char is a bracket
I want to check the last char of an array entry, if it's a bracket or not.
My code looks like this:
my $lastchar = substr $blub[8],-1,1;
print ...
