Sometimes, you want to pass the arguments you received on to the called function. It's more efficient than creating a new @_. Even more efficient is goto(&f) which returns directly to the caller. Both of these tricks are useful when dealing with advanced features and techniques such as AUTOLOAD and currying. This is not something one commonly does, so & is rarely required.

In reply to Re^3: calling f(arg1,arg2,arg3) better than &f by ikegami
in thread calling f(arg1,arg2,arg3) better than &f by edwardt_tril

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