Hi,

There is any way to evaluate simple math strings like this one: "(1 + 2) * 3" and pass the result?


Thanks,
Bogdan

On Tuesday, 8 April 2014 at 20:18:43 UTC, Szabo Bogdan wrote:
> Hi,
>
> There is any way to evaluate simple math strings like this one: "(1 + 2) * 3" and pass the result?
>
>
> Thanks,
> Bogdan

Not built in, but Pegged has an example which does exactly that:

https://github.com/PhilippeSigaud/Pegged/blob/master/pegged/examples/arithmetic.d

On Tue, Apr 08, 2014 at 08:18:41PM +0000, Szabo Bogdan wrote:
> Hi,
> 
> There is any way to evaluate simple math strings like this one: "(1 +
> 2) * 3" and pass the result?
[...]

If you want this at runtime, you'd have to write your own expression parser. At compile-time, you can use a mixin.


T

-- 
It said to install Windows 2000 or better, so I installed Linux instead.

Thanks!

I was looking for some kind of mixins but at the run time... But this library look interesting. I think i will use something like this.

Bogdan


On Tuesday, 8 April 2014 at 20:31:55 UTC, Rene Zwanenburg wrote:
> On Tuesday, 8 April 2014 at 20:18:43 UTC, Szabo Bogdan wrote:
>> Hi,
>>
>> There is any way to evaluate simple math strings like this one: "(1 + 2) * 3" and pass the result?
>>
>>
>> Thanks,
>> Bogdan
>
> Not built in, but Pegged has an example which does exactly that:
>
> https://github.com/PhilippeSigaud/Pegged/blob/master/pegged/examples/arithmetic.d