π in Ruby
I think I'm pretty much doing pi approximations in every language now, so here it is in Ruby!
Here are the other approximations so far:
Java - https://repl.it/talk/share/p-in-Java/34978
QBasic - https://repl.it/talk/share/p-in-QBasic/34973
Fortran - https://repl.it/talk/share/p-in-Fortran/34890
APL - https://repl.it/talk/share/p-in-APL/34888
Forth - https://repl.it/talk/share/p-in-Forth/34652
LOLCODE - https://repl.it/talk/share/p-in-LOLCODE/34421
Python and Node.js (Node is linked in post) - https://repl.it/talk/share/2-Approximations-of-p-In-Only-Four-Lines-of-Code/32773
C - https://repl.it/talk/share/p-Approximations-in-C/33461
Credit to @TheForArkLD , @Warhawk947 , and @LizFoster for inspiring these approximations. Most of these use the Nilakantha Series, although I also use the arctangent method (multiplying the radian arctangent of 1 by 4 to get pi and getting the arctangent with an infinite series) in three of them (Python, Node, and C).
OMG how many languages you know???
and why you love pi so much???
And for pi, it is clearly the best mathematical constant that exists and I really enjoy math, so, my fascination with pi is simply derived from my interest in math.
Why are you using global variables? Maybe use a more object-oriented approach like this?
As cool as it is to do this in tons of languages (which I fully support btw), maybe try learning a bit more about each language so each approximation is coded in the "style" of that language (if that makes sense).
Also sonic pi is cool :)
@theangryepicbanana The reason I did global variables is because I did not yet know how to do classes in Ruby (of course, I do now that you have shown me this example). Also, with learning a bit more about each language, I completely understand that. My idea behind this, though, was to learn the basics of as many languages as possible and to learn what the languages are best for so that I can learn more about the languages in the future. For example, while I don't think I will use Ruby as much since it is sort of becoming outdated, it is good to have a general idea of the syntax so that I can program in it if I ever need to. Also, by the style of the languages, I'm guessing you mean like how, in the Java approximation, I used a class to store the functions instead of just using a for loop or while loop. If so, I've been trying to do that as much as possible, but just with Ruby, I did not yet really know what that style was. I thought it was more like what I have done in the past with Sonic Pi where I normally used global variables instead of classes.
Next, should I do Rust or Go? I'd have to learn both to do them, so I just want to know which to start with.