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CGI Perl Interview Questions
Questions Answers Views Company eMail

How do you debug a Perl scripting ( at the compile time error or run time error) in Unix environment ?

4 8274

how to search a unique pattern in a file by using perl hash map function ??? plz answer me

 2 6710

how to install a package in perl ????

2 4777

How to count no of occurrence of a unique patterns in perl?

Ness Technologies,

4 13868

what is the difference between require and use in perl?

IBM,

3 8795

what is the difference b/w coldfusion MX 6 and Coldfusion MX 7?

 1 4086

Which web site will help the student to download the Java mini Project ?

3 3414

while(my($key, $value) = each(%hash) ) { print "$key => $value\n"; } my($key, $value); while(($key, $value) = each(%hash) ) { print "$key => $value\n"; } What is the different between these two code in case of "my" usage ?

1 4470

my @array=('data1','data2'); my @array1=('data1','data2'); my ($i,$k); $i=7; $k=7; while($i){ $array [++$#array] = 'ree'; $i--; print "@array"; } while($k){ push(@array1,'ree'); $k--; print "@array1"; } Are these two while loop are doing the same functionality ? What may be the difference?

A1 Technology,

1 3266

What is the difference between $array[1] and @array[1]?

 1 3903

How can I implement the function overloading in Perl ? I read about the operator overloading, I do not know how to implement the function overloading. Thanks in advance ?

 2506

my @array=('data1','data2'); my @array1=('data1','data2'); my ($i,$k); $i=7; $k=7; while($i){ $array [++$#array] = 'ree'; $i--; print "@array"; } while($k){ push(@array1,'ree'); $k--; print "@array1"; } Are these two while loop are doing the same functionality ? What may be the difference?

 2 3298

Consider the following example #! /bin/perl use strict; sub sample { my @arr=(1,2,3,4); return @arr; } my ($a,$b,$c,$d) = &sample; print "$a\n$b\n$c\n$d\n"; In the above code, How can I get the $c without using the arguments such as $a,$b. I don't want to use any array to get the return values.

 2 3181

package MYCALC; use Exporter; our @EXPORT = (); our @ISA = qw(Exporter); our @EXPORT_OK = qw(addition multi); our %EXPORT_TAGS = (DEFAULT => [qw(&addition)],Both => [qw(&addition & +multi)]); sub addition { return $_[0] + $_[1]; } sub multi { return $_[0] * $_[1]; } 1; Program: use strict; use warnings; my @list = qw (2 2); use Module qw(:DEFAULT); print addition(@list),"\n"; Above coding is my module MYCALC and the program which using this module, I have not exported any function using @EXPORT, but I have used the DEFAULT in %EXPORT_TAGS with the function addition, when I call this function from the main it says the error as,

 2273

write a script to check whether user enter a value is a leap year or not?

Oracle, Persistent, ViPrak,

3 14421

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Un-Answered Questions { CGI Perl }

what is the function of Return Value?

572

What is automatic error handling in perl?

511

How to turn on Perl warnings? Why is that important?

589

Explain chop?

544

Perl uses single or double quotes to surround a zero or more characters. Are the single(' ') or double quotes (" ") identical?

536




What are the logical operators used for small scale operations? Explain them briefly.

553

How can information be put into hashes?

547

How to open and read data files with Perl

615

How to copy a file in perl?

524

What are the advantages of perl programming?

542

Explain a tell function in perl?

550

How can I implement the function overloading in Perl ? I read about the operator overloading, I do not know how to implement the function overloading. Thanks in advance ?

2506

How many ways can we express string in Perl?

546

What are prefix dereferencer? List them.

575

What is an interpolation in perl?

570

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