Numpy Diff in Julia DataFrames?

New to Julia
2

diff is included in Base: https://docs.julialang.org/en/v1/base/arrays/#Base.diff

julia> diff(log.(close_data))
10-element Vector{Float64}:
  0.011301075474000832
  0.001871157990479766
  0.0005339741149432697
  ...
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