[squeak-dev] Re: [Vm-dev] Re: [Pharo-project] About ~= and ~~

[Nicolas Cellier]

2011/10/12 Colin Putney <colin at wiresong.com>:
>
> On Wed, Oct 12, 2011 at 1:20 PM, Eliot Miranda <eliot.miranda at gmail.com> wrote:
>
>> But why, if it doesn't express intent directly?  It's cognitively more difficult.  You have to negate to get the intent.
>
> <shrug> to me it's not cognitively more difficult. You have to negate
> either way, either "not identical" or "if false". I just prefer the
> negation to be explicit in the big "ifFalse:" rather than implied by
> the implementation of #~~.
>
> Colin
>

One of my favourites in the serie is #quo: which found currently
fastest way to inline #xor:

ng := self negative == aNumber negative == false.

Nicolas