Documentation for Complex is wrong or misleading
The documentation for
Complex https://ruby-doc.org/core-2.6/Complex.html says or implies that a complex can be created by literal like
2+1i, but that is actually calling the method
+ on receiver
2 with argument
1i. The description should be changed to make it clear that
2+ 1i is not a literal but is applying a method.
Updated by Hanmac (Hans Mackowiak) about 2 years ago
sawa (Tsuyoshi Sawada) wrote:
Actually, currently, there is no literal for complex numbers whose real part is non-zero. I think we need a literal to cover such cases. If something along nobu's suggestion works, that would be preferable.
it wasn't a suggestion from him, i just wanted to ping him so he can see the message
Updated by nobu (Nobuyoshi Nakada) about 2 years ago
There would be a chance to optimize such expressions, but it is not a single literal syntactically, and constant folding is disabled in Ruby for its dynamic nature.
New literal syntax will be needed for an (impurely) imaginary number literal, but I doubt that we really need it.