class was added to experimental in version 0.036. The current version in perldoc is 0.035 (which is part of perl 5.42.2).

keyword_any and keyword_all were also added in 0.036: https://metacpan.org/dist/experimental/changes.

In reply to Re: Perl Experimental Features Usage and Testing by swl
in thread Perl Experimental Features Usage and Testing by InfiniteSilence

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