Any function to check?

Does anyone knows of any function which gives me output as yes or no, whether an array or hash has certain text as value or key respectively.

For example an array has elements (a, b, h, w, o, v, d) and i need to check whether the array contains 'w' as element or not?

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Migrateduser

You can use grep to achieve it like.

$result = grep('w', @list);

if there is a string 'w' in the list result will have 1 otherwise 0.

kaalraa

You can use grep to achieve it like.
$result = grep('w', @list);
if there is a string 'w' in the list result will have 1 otherwise 0.

Any performance issue??

nipper

Does anyone knows of any function which gives me output as yes or no, whether an array or hash has certain text as value or key respectively.

For example an array has elements (a, b, h, w, o, v, d) and i need to check whether the array contains 'w' as element or not?

A hash or an array ? A hash is easy, (if it is a key), as a value you can create a reverse hash and do it. Read the Perl FAQ for more details.

For arrays, grep works (but is slower), the FAQ has a couple of other options, List::Util being a decent choice, faster but still easy to use.

Andy

kaalraa

A hash or an array ? A hash is easy, (if it is a key), as a value you can create a reverse hash and do it. Read the Perl FAQ for more details.
For arrays, grep works (but is slower), the FAQ has a couple of other options, List::Util being a decent choice, faster but still easy to use.
Andy

Thanks Andy. Actually i have a hash in which i need to do this, however i could not make a reverese hash as there are duplicate values within hash.

Any turnaround for this?

nipper

Your should be able to use List::Util, take a look at the FAQ and change that example to work for a hash.

amitkshar_2005

Hi Achin

I think, exist function of HASH can solve your query.

Hemant

kaalraa

Hi Achin

I think, exist function of HASH can solve your query.

Hemant

Thanks Dada,
However i am done with my requirement.

amitkshar_2005

Great...I saw some of your comments. You r doing really a good job:-)