Apart from the fact that, as posted, your two snippets do different things (and the second is missing a ')'), I'd do that this way:

my @devices = grep{ defined( $_ = parse_node( $_ ) ) } @nodes;

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The start of some sanity?

In reply to Re: Temp variable performace vs Inline behavior by BrowserUk
in thread Temp variable performace vs Inline behavior by Ransom

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