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Re^6: Regarding STDOUT and indirect object notation for print

by romandas (Pilgrim)
on Dec 29, 2009 at 23:47 UTC ( #814847=note: print w/ replies, xml ) Need Help??


in reply to Re^5: Regarding STDOUT and indirect object notation for print
in thread Regarding STDOUT and indirect object notation for print

Heh.. not the first time I've been all wrong; likely not the last.

So, STDOUT is a glob? Of what? My understanding of globs is it's a bunch of filenames, which you can then iterate over to open, close, test, etc. Is that wrong too?

I'm not sure I follow your logic on the last statement. If, for a glob, Perl will check the IO::Handle namespace, then loading the IO::Handle module will populate that namespace with what Perl needs to find (in this case, the print method), yes? If not, please clarify your statements; I'd appreciate it.


Comment on Re^6: Regarding STDOUT and indirect object notation for print
Re^7: Regarding STDOUT and indirect object notation for print
by jwkrahn (Monsignor) on Dec 30, 2009 at 00:22 UTC
    So, STDOUT is a glob? Of what? My understanding of globs is it's a bunch of filenames, which you can then iterate over to open, close, test, etc. Is that wrong too?

    STDOUT is a Perl type glob, not a file glob. A type glob is related to Perl's built-in and package variables.

Re^7: Regarding STDOUT and indirect object notation for print
by ikegami (Pope) on Dec 30, 2009 at 00:49 UTC

    Different kind of glob. Short for type glob, it's the name of the structure used for symbol table entries. Since each symbol name can be used to refer to a scalar, an array, a hash, a function, etc, a typeglob is a structure with a slot for scalar, a slot for an array, ... and a slot for an IO object. You are passing the glob, and the function grabs the associated IO object (or creates it in the case of open).

    If, for a glob, Perl will check the IO::Handle namespace, then loading the IO::Handle module will populate that namespace with what Perl needs to find (in this case, the print method), yes?

    Couldn't have said it better.

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