@vars from thr tutorial video is not defined

[mmikhasenko]

The video at index.md is super useful.
While following I hit a few problems:

• @vars is not defined

I found a note of missing docstring in
https://docs.yaoquantum.org/dev/man/symbolic.html
but the method does not seem to appear in the YaoSym code.

Is it deprecated? How to make symbolic calculations work?

[GiggleLiu]

Try this

julia> using Yao

julia> using SymEngine
[ Info: Precompiling SymEngine [123dc426-2d89-5057-bbad-38513e3affd8]
@vars 
julia> @vars a b c
(a, b, c)

julia> Rx(a)
rot(X, a)

@vars in defined in SymEngine. We will fix the documentation soon.

[mmikhasenko]

thanks, it works