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Re^2: Eliminating conditional code for GUI and text-mode operation

by gnosti (Friar)
on Dec 08, 2007 at 09:09 UTC ( #655812=note: print w/ replies, xml ) Need Help??


in reply to Re: Eliminating conditional code for GUI and text-mode operation
in thread Eliminating conditional code for GUI and text-mode operation

I'm thrilled to begin getting this... although some hours are going by...

As stand-alone code, this example produces the expected output. As a module (built with the h2xs boilerplate) make test fails with:

Tried to use 'TestOO'. # Error: Can't locate object method "new" via package "UI::Graphical" at /media/jroth/ecmd-dev/TestOO/blib/lib/TestOO.pm line 56.

Any ideas about this? I just pasted this stuff into the 'precompiled methods go here' indicator in the boilerplate.

Is there a reason why the children would inherit 'new' from the superclass in one context and not in another?

package UI; use Object::Tiny qw(dummy); sub hello {print "superclass hello\n"}; package UI::Graphical; @ISA = 'UI'; sub hello {print "make a window\n";} my $ui = UI->new; $ui->hello; $ui = UI::Graphical->new; $ui->hello; 1;


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Re^3: Eliminating conditional code for GUI and text-mode operation
by ikegami (Pope) on Dec 08, 2007 at 14:06 UTC
    Are you sure that's the code you ran? It should work. And it works for me.
    >perl 655812.pl superclass hello make a window

    use Object::Tiny qw(dummy);
    can be written as
    use Object::Tiny;
    but not as
    use Object::Tiny qw( ); or
    use Object::Tiny ( );
    You would get the error you showed if you did one of the latter two.

    Also, if you have no members, you can use
    $ui = 'UI'; instead of $ui = UI->new();, and
    $ui = 'UI::Graphical'; instead of $ui = UI::Graphical->new();.
    However, you'll probably need some members, so you might as well continue the way you are going.

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