Re^4: typeglob: $var = *x ???

I showed that it doesn't need dereferencing.
$gv = *x; @$gv => @x
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perlreftut says that the syntax @$gv is a shortcut for @{$gv}, and that looks like the very definition of dereferencing to me (see perlreftut, Use Rule 1). As far as I can tell, the only time you don't have to dereference the variable is when you use it as a filehandle--in that case it appears that perl uses the context to determine that it should extract the filehandle part of the typeglob.

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Re^5: typeglob: $var = *x ??? by ikegami (Patriarch) on Jun 16, 2011 at 15:30 UTC
that looks like the very definition of dereferencing to me I thought you meant `$gv` vs `$gv` it's not obvious that $val needs dereferencing.* Completely false. "@foo" returns the list of elements in the array. "$foo" does not. According to you, (A) and (B) and (C) should be the same? `A: @m = $x; B: @m = @$x; C: @m = $$x;` [download] The only thing that may not be obvious is that globs can be "dereferenced" instead of having to do `$gv{ARRAY}`. As far as I can tell, the only time you don't have to dereference the variable is when you use it as a filehandle* Both the "`@`" and "`print`" operators accept a scalar containing a glob. The first peeks into the ARRAY slot. The latter peeks into the IO slot. Both "dereference" the glob.	[reply] [d/l] [select]

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Re^5: typeglob: $var = *x ???
by ikegami (Patriarch) on Jun 16, 2011 at 15:30 UTC

that looks like the very definition of dereferencing to me

I thought you meant $gv vs *$gv

it's not obvious that $val needs dereferencing.

Completely false.

"@foo" returns the list of elements in the array. "$foo" does not.

According to you, (A) and (B) and (C) should be the same?

A: @m = $x;
B: @m = @$x;
C: @m = $$x;
[download]

The only thing that may not be obvious is that globs can be "dereferenced" instead of having to do *$gv{ARRAY}.

As far as I can tell, the only time you don't have to dereference the variable is when you use it as a filehandle

Both the "@" and "print" operators accept a scalar containing a glob. The first peeks into the ARRAY slot. The latter peeks into the IO slot. Both "dereference" the glob.

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