in reply to Kindly let me know what exactly && does in Perl

You got many detailed answers lets try a short one. :)

The first decisive value is returned by || and &&.

If the whole && expression is true can only be known by the last value (which must also be true and is returned), otherwise the first false value is returned.

And vice versa for || - just swap true and false.

HTH :)

Cheers Rolf

(addicted to the Perl Programming Language and ☆☆☆☆ :)

corrections

Updated wording, see reply for details.

  • Comment on Re: Kindly let me know what exactly && does in Perl

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Re^2: Kindly let me know what exactly && does in Perl
by Anonymous Monk on Sep 07, 2014 at 17:06 UTC
    If the whole && expression is true can only be known with the last true value, ...

    That wording leaves open the possibility that there might be more false values after the "last true value"... perhaps better:

    The whole && expression is only true if all its operands are true, in that case the last true value is returned; otherwise the first false value is returned.

[reply]
[d/l]
      True!

      or just:

      The first false value (if existing) is returned, otherwise the last one (which is hence true).

      Hope I can transport the idea, feel free to correct my English! :)

      Cheers Rolf

      (addicted to the Perl Programming Language and ☆☆☆☆ :)

[reply]

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