python vs julia

python_julia.md

Expericence with julia (coming from python)

	python	julia	comment
	print(1, 2)	🤦‍♂️ println(1, " ", 2)	why I need to type ln?
slicing	👍 a[::2]	🤦‍♂️ a[1:2:end]	too verbose (start/stop must be given)
		🤦‍♂️ sin.(a) .- 1	silly dot
func def		👍 f(x) = 2*x
complex numbers	👍 1j	1im
		👍 2x	🤦‍♂️ 0x syntax: invalid numeric constant "0x"
		🤦‍♂️ [1, 2.+0im]	syntax: invalid syntax "2.+"; add space(s) to clarify
		🤦‍♂️ [1, 2. +0im]	syntax: missing separator in array expression
		🤦‍♂️ [1] * (0:0.1:1).step	too strict MethodError: no method matching *(::Vector{Int64}, ::Base.TwicePrecision{Float64})

Uh, note the difference: 1 ./ x vs 1. / x.

• 1+[1, 2]: MethodError: no method matching +(::Int64, ::Vector{Int64})
• 1.+[1, 2]: syntax: invalid syntax "1.+"; add space(s) to clarify
• 1 .+[1, 2]: works 🤦‍♂️
• 1. .+[1, 2]: convert to double