in reply to passing subroutine arguments directly into a hash
One way of doing this assignment would be to use
a hash slice on the left hand side of an assignment
from @_:
sub f { my %hash; @hash{ qw/ h s d / } = @_; # ... }
(That hash slice is equivlent to ($hash{h}, $hash{s}, $hash{d}).)
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In Section
Seekers of Perl Wisdom