Subject: Re: [boost] [units] Interest in UDLs (e.g. _kg) for units?
From: Mathias Gaunard (mathias.gaunard_at_[hidden])
Date: 2014-08-25 11:16:21
On 25/08/14 16:03, Sebastian Redl wrote:
>
> On 25 Aug 2014, at 13:24, Mathias Gaunard <mathias.gaunard_at_[hidden]> wrote:
>
>> On 22/08/14 10:08, Curdeius Curdeius wrote:
>>> Hi all,
>>>
>>> I was wondering if there is any interest in adding User-Defined Literals
>>> (UDLs) to Boost.Units.
>>>
>>> IMO, it could simplify some code and improve code readability in some cases.
>>> For example instead of writing (it's a somehow artificial example)
>>> 5.34 * si::milli * si::kilogram;
>>> 1234 * si::kilogram;
>>> one would write
>>> 5.34_g;
>>> 1234_kg;
>>
>> Did you mean to write
>> 5.34_g * si::milli;
>> or
>> 5.34_mg;
>> ?
>
> No, to get grams you need si::milli * si::kilogram. I assume the intention is that the _g suffix already includes that scaling - otherwise it’d be broken.
Sorry, I read that too fast.
In any case the idea would be to get suffixes that include all prefix
variants as well.