How would you trap error occurred in the perl program/file?

Question Posted / jay mishra

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How would you trap error occurred in the perl program/file?..

Answer / prabhath kota

You can catch the errros by using eval function.
Keep your code in eval block some thing like shown below.
Eg.,
#################################
eval {
my $a = 0;
my $b = $a/0; #Dividing 0 with 0 is definitely an error
};

if ($@) {
print "\n Error in your code";
}

############################
-> Eval block always ends with a semi-colon. $@ will catch
the errors persent.

-> If any errors are present $@ will be set otherwise $@
will not be set

-> Unfortunately in Perl we don't have Explicit Error
handling techniques like some other languages like java etc
I mean like IOException etc.,

Is This Answer Correct ?

5 Yes

3 No

How would you trap error occurred in the perl program/file?..

Answer / shah faisal

#Ist trapping the error in a block
eval {
# perl code goes here
};

if ($@) { # $@ is a special variable containing the error
if any else blank
print "Print your own error If u want";
}

# 2nd
# use if or unless for a loop ;ike below
if(chk some condition)
{
die"$!\n"; # if the condition success
}
system generated error is printed and the scirpt is exited
}

Is This Answer Correct ?

0 Yes

0 No

How would you trap error occurred in the perl program/file?..

Answer / perly_whirly

Put your code inside of an eval. If an error occurs, the $@ variable will contain
the error. You can also raise an error by using die inside of an eval.

Is This Answer Correct ?

1 Yes

3 No

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