How to add pi , e and factorial to the expression?

[mishatron]

every calculator has pi, e and factorial methods. but how to parse them using your library?

[fkleon]

Hi

Thanks for raising those. As mentioned in other issues, the parser is currently pretty limited.

• Pi (and many other constants) are not supported in the parser
• The exponential function can be parsed as follows: e(2) for the expression e²
• The factorial function is not implemented in the parser or the library

It would be relatively easy to add support for Pi and the factorial function.
Have a look at lib/src/parser.dart and lib/src/functions.dart if you're interested in contributing.

[mishatron]

I am interested, but currently have no time for this. Also about linitations - how to select radians and degrees for trigonometry?!

[fkleon]

That's currently not supported either, sorry.

[Divyanshu-S]

When are you planning to add the above-specified features ??

[fkleon]

Hi @Divyanshu-S, sorry I don't currently have a timeline for this. As mentioned above, this should be fairly easy to add, and I'm welcoming contributions.

[Friendly-Banana]

It seems no one has done this yet, so I would like to implement this.

[Friendly-Banana]

Ok, I got a running version. Where should I push to / post my code?

[fkleon]

@Just-Learned-It Great! You should first fork the repository, and then follow the GitHub flow to make a pull request.

[youngunand]

Hi @fkleon, has parsing pi also been added?

[fkleon]

Hi @youngunand. Support for parsing Pi has not been added yet.