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Re^2: Searching between two hashes

by TStanley (Canon)
on Nov 10, 2017 at 21:03 UTC ( #1203137=note: print w/replies, xml ) Need Help??


in reply to Re: Searching between two hashes
in thread Searching between two hashes

Thanks for that. After 17 years of programming with Perl, I still get those particular operators confused. Part of it is also the fact that I don't do a whole lot of programming any more.

TStanley
--------
People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf. -- George Orwell

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Re^3: Searching between two hashes
by hippo (Abbot) on Nov 11, 2017 at 11:54 UTC
    I still get those particular operators confused.

    Top tip: since you know that you fall victim to this (which is more than half the battle), don't write them as $mac2 = '' which is plausible, but instead like '' = $mac2 which is not. The latter is trapped at compile time. Then when you see the compiler errors you can replace the offending expression with the correct '' eq $mac2. Always put the literal value on the left side of the operator to prevent it being a plausible assignment. HTH.

    (Edited for typo)

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