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Re: Slicing with Arrow-Operator possible in 5.12?

by haoess (Curate)
on Dec 22, 2008 at 19:31 UTC ( #732177=note: print w/replies, xml ) Need Help??


in reply to Slicing with Arrow-Operator possible in 5.12?

You should start with this mail:
For 5.12: clean up dereferencing syntax for slices by Ovid.

-- Frank

  • Comment on Re: Slicing with Arrow-Operator possible in 5.12?

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Re^2: Slicing with Arrow-Operator possible in 5.12?
by LanX (Chancellor) on Dec 22, 2008 at 22:35 UTC
    Thanks!

    Unfortunately there seem to be a compability conflict with hashes. For isntance $hr->{qw/this that/} already means $$hr{join $;,qw/this that/} !

    That's an old feature (perl4 ?) for multidimensional hashes $hash{"this","that"}!

    (for more see documentation for $; in perlop)

      You're looking for @{$hr}{qw/this that/}

      My criteria for good software:
      1. Does it work?
      2. Can someone else come in, make a change, and be reasonably certain no bugs were introduced?

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[marinersk]: sub newtest{my $expected_result = &target('foo'); my $actual_result = &target('foo'); if ($actual_result eq $expected_result) { &tdd_success(); } else { &tdd_fail(); } } # Test works after three years!
[choroba]: or nobody bothered...
[choroba]: The problem was bigger, as the test tried to call a method that didn't exist anymore
[marinersk]: :: ducking ::
[choroba]: because, someone renamed the method, but didn't notice it was used in the test, as the test was skipped
[marinersk]: Well, if the method doesn't exist, it would be hard to pass the test.
[choroba]: later, someone removed the new method, as all its usage places were safe, but didn't notice the test still used the old name
[choroba]: fortunately, it wasn't that hard to replace the method and fix a few remaining failures due to the changes we did to the codebase over the years
[marinersk]: choroba Sounds like a process improvement opportunity; tests may not all need to be run, but they should all be compiled with perl -c before check-in/promotion happens.
[choroba]: so, now I have the test, so I can start making changes in the code. Back to the original ticket, yay!

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