I care less about the name than the functionality, could be also "count" or whatever suits.
I suppose "elems" is already known from ruby or perl6? So why not.¹
But² tobyinks and your suggestion w/o prototypes is considerably slower on large arrays.
DB<106> use Time::HiRes qw(time)
DB<107> sub elems { scalar @_ }
DB<108> @a=(1..1e6);0
DB<109> $t=time; $count = scalar @a; print time-$t
7.10487365722656e-05
DB<110> $t=time; $count = elems @a; print time-$t
0.0554749965667725
Perl 5.10!
¹) Well the plural in "elems" somehow indicates a list to be returned.
²) as already said
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