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Re: [perl #123466] Overloading for number-specific bitwise ops

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On Mon Jan 05 22:02:36 2015, aristotle wrote:
> * Father Chrysostomos via RT <perlbug-followup@perl.org> [2015-01-04 23:45]:
> > Does anybody currently overload & | ^ ~ for non-numeric uses?  The
> > only use of these I am aware of is by modules like Math::BigInt, etc.
> 
> I’ve seen | overloaded to mean a shell pipe between process objects.
> 
> I’ve seen & overloaded for something that likewise had nothing to do
> with bitwise logic, though what it was escapes me.
> 
> You cannot avoid calling these overloads.
> 
> Maybe overloads of the numeric bitwise ops would receive a new fourth
> argument which is true for a purely-numeric bitwise op and false for
> a mixed-mode op? Instead of sending the caller out to fuss about with
> hints in order to find that information, you just give it to them. No?
Most overload handlers get passed 3 arguments.  nomethod handlers are passed four, the fourth being the operator in question.
For & do we pass a boolean as a 4th or 5th argument indicating numericalness depending on whether it is a nomethod handler?  Or do we make it always the 5th argument?
-- 
Father Chrysostomos
---
via perlbug:  queue: perl5 status: open
https://rt.perl.org/Ticket/Display.html?id=123466

Thread Previous | Thread Next

• [perl #123466] Overloading for number-specific bitwise ops by Father Chrysostomos via RT
• Re: [perl #123466] Overloading for number-specific bitwise ops by Aristotle Pagaltzis
• Re: [perl #123466] Overloading for number-specific bitwise ops by Father Chrysostomos via RT
• Re: [perl #123466] Overloading for number-specific bitwise ops by Ricardo Signes
• Re: [perl #123466] Overloading for number-specific bitwise ops by Aristotle Pagaltzis
• Re: [perl #123466] Overloading for number-specific bitwise ops by Ricardo Signes
• Re: [perl #123466] Overloading for number-specific bitwise ops by Father Chrysostomos via RT
• Re: [perl #123466] Overloading for number-specific bitwise ops by Ricardo Signes