Assume your hash has 15 keys. @_ is a list of all the keys. As an EXPR for rand, @_ is evaluated in scalar context, which results in the number of items in the array (15). rand @_ is like rand 15, which returns an integer between 0 and 14. Say it returns 6. Then, the 7th key ($_[6]) is returned by the sub.

UPDATE: I agree with the reply below that rand does not return an integer.

In reply to Re: How it works? by toolic
in thread How it works? by monorels

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