ftumsh has asked for the wisdom of the Perl Monks concerning the following question:
Lo all,
I have seen some modules that allow the opening of a file by passing one parameter to just the one method. The param can be one of file name, open file handle or an IO::File object.
I want to do the same sort of thing. What sort of tests do I do to see what type of paramter has been passed?
Thx
John
Re: opening files using handles, objects etc
by davorg (Chancellor) on Jul 06, 2006 at 10:11 UTC
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You want to look at the ref function. For more complex checks (to see if an object is a subclass of another object of if an object implements a certain method) then look at the isa and can methods from UNIVERSAL and the blessed function from Scalar::Util.
--
< http://dave.org.uk>
"The first rule of Perl club is you do not talk about
Perl club." -- Chip Salzenberg
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Thinking about it...
It would make sense to convert all possibilities to just the
one in my object, would it be better to store it as a file handle or an IO::File object? I'm only writing text to the file, not doing anything special. Oh and reading from another file.
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For some reason I thought that there might be a bit of magic involved!
Thanks for your time
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