|
We all know that simple scalars
can be chained together; $boolean = $this and
$that or $the_other; I'm sure many of you have used
Perl methods which return objects which you can use again in a chain like
so: push @status_options,
'hidden' if
GCt::glyph_attribute->retrieve(
glyph_type => $glyph_type,
attr_name => 'face_hideable'
)
->attr_value; It would be neat if there were
some method-chaining syntax/module which indicated "return false if
your method call returns false":
$object-?->method1-?->method2-?->method3 One solution appears to be
Pipeline:
http://search.cpan.org/~rclamp/Pipeline-3.12/lib/Pipeline.pm What I currently do is wrap the
method chain in an eval block and check to see if a Boolean was set
within the block: { my $boolean; eval { $boolean
=
GCt::glyph_attribute->retrieve
( glyph_type
=> $glyph_type,
attr_name => 'face_hideable'
)
->attr_value; } } push @status_options, 'hidden' if
$boolean; but that is much wordier than: push @status_options,
'hidden' if
GCt::glyph_attribute-?->retrieve(
glyph_type => $glyph_type,
attr_name => 'face_hideable'
)
-?->attr_value; Any feedback is appreciated. |
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