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Date: Fri, 22 Nov 2013 20:21:38 +0000
Message-ID: <CAPwsocGo6y6jWhe_WoCPg6vx7v25FWozwwPGUXkfSXbFabHQ+A@mail.gmail.com>
To: Sherif Ramadan <theanomaly.is@gmail.com>
Cc: Tjerk Meesters <tjerk.meesters@gmail.com>, PHP Internals <internals@lists.php.net>
Content-Type: text/plain; charset=ISO-8859-1
Subject: Re: [PHP-DEV] Power function as operator
From: leight@gmail.com (Leigh)

On 22 November 2013 17:08, Sherif Ramadan <theanomaly.is@gmail.com> wrote:
> I definitely like the idea of having pow as an operator. I've actually been
> wanting to copy that from Python for a while. I'm all for it.

On 22 November 2013 19:56, Sherif Ramadan <theanomaly.is@gmail.com> wrote:
> That looks very wrong. pow(pow(2,3),2) == 64
>
> Exponent precedence should always be one higher than multiplication
> precedence.

Where Tjerk has placed it is exactly as python has it. I think right
assoc is the correct choice here. If you imagine 2^3^2 written down,
you would do 2^(3^2), not (2^3)^2

Python 2.7.3 (default, Jan  2 2013, 13:56:14)
[GCC 4.7.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> 2 ** 3 ** 2
512