note
tobyink
<p>Using a coderef <em>at all</em> bypasses prototypes. (As does calling a sub as a method.)</p>
<p>If you need to check the number of arguments passed to a sub, <strong>do it in the sub!</strong> Prototypes are just to help the Perl parser parse argument lists more sanely.</p>
<c>
sub execute {
@_==3 or croak "execute() needs three arguments!!";
...;
}
</c>
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<small><small>
<tt>perl -E'sub Monkey::do{say$_,for@_,do{($monkey=[caller(0)]->[3])=~s{::}{ }and$monkey}}"Monkey say"->Monkey::do'
</tt></small></small>
</div></div>
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