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A better way to check for particular value is defined or not, use defined function in perl.

Syntax: defined EXPR

defined function will return true if EXPR has a value other than the undefined value "undef".
Defined function will return true even if the value of particular scalar is null string. To check whether value of scalar is defined and not null, use following code.

my $defined_string="Defined_value"; print "Value of defined_string is defined and its value:$defined_strin +g" if(defined $defined_string && $defined_string ne '');


In reply to Re: Check For null Arguments by nvivek
in thread Check For null Arguments by rfleisch

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    [james28909]: yeah like wizard of oz lol. its just a joke though
    [james28909]: i cannot understand how someone cant see that a cloud of gas that evolves into a solar system or galaxies. it just makes sense to me. everythign that has happened, had to have happened for anything on this planet to be.
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    [james28909]: another thing, i used to be atheist. life experiences, personal evidence. and my own perception is the reason why i believe the things i do.
    [erix]: and now you are agnostic?
    [james28909]: arunbear, your picking bits of history to fit your own narrative. right now, humans are smarter than in any of those times.
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