Add Tau constant

[12people]

I'd very much appreciate it if the tau constant was added to Dart's math library. There is a movement to adopt this constant as a more intuitive alternative to pi, and it's already been adopted by Rust, Python, Julia, Processing, .NET, and others.

While this feature request has been reported twice in the past (as #14 and #21308), it seems that neither reached a conclusion and both seem to have been automatically closed both times due to inactivity.

I'm therefore opening up this issue again in the hopes that the constant might be added.

[mraleph]

Duplicate of #14

[mraleph]

Please note that both #14 and #21308 are pretty clearly closed as "will not fix". See

#21308 (comment)
#21308 (comment)
#14 (comment)

There is no real value in adding this constant.

[12people]

Ah, sorry, you're right — I missed the "WontFix" label.

I strongly disagree with the "no real value" argument — adoption by programming languages is an important step towards broader adoption of tau, and broader adoption of a more intuitive circle constant would have a plethora of potential benefits. I'm disappointed that it's been decided that it won't be adopted, but I guess there's nothing else I can do about this.

Thanks for the quick response!