@newcol in @byrow! not defined

[dun10p]

Hi. Sorry to be a bother. I'm getting an error saying "UndefVarError @newCol not defined", when running the block in the readme that includes @byrow! and @newCol as displayed below.

df = DataFrame(A = 1:3, B = [2, 1, 2])
df2 = @byrow! df begin
    @newcol colX::Array{Float64}
    @newcol colY::DataArray{Int}
    :colX = :B == 2 ? pi * :A : :B
     if :A > 1 
        :colY = :A * :B
    end
end

I'm trying to apply this to my own dataframe to bring separate time and date columns into a single column that contains DateTime elements. I was thinking this would work:

dateForm = Dates.DateFormat("d-u-y H")
newMachineData = @byrow! MachineData begin
@newCol DT::Array{DateTime}
:DT = DateTime(string(:DATE, " ", :HOUR), dateForm)
end

However, the error with @newCol is raised. It's likely I'm missing something simple though. I am new to Julia

[tshort]

It may be that the readme is ahead of the released version of
DataFramesMeta. You may have to checkout the most recent commit to get this
feature. I'm not at a location I can check easily.

---------- Forwarded message ----------
From: dun10p notifications@github.com
Date: Tue, May 24, 2016 at 3:22 PM
Subject: [JuliaStats/DataFramesMeta.jl] @newCol in @byrow! not defined (#54)
To: "JuliaStats/DataFramesMeta.jl" DataFramesMeta.jl@noreply.github.com

Hi. Sorry to be a bother. I'm getting an error saying "UndefVarError
@newCol not defined", when running the block in the readme that includes
@byrow! and @newCol as displayed below.

df = DataFrame(A = 1:3, B = [2, 1, 2])
df2 = @byrow! df begin
@newCol colX::Array{Float64}
@newCol colY::DataArray{Int}
:colX = :B == 2 ? pi * :A : :B
if :A > 1
:colY = :A * :B
end
end

I'm trying to apply this to my own dataframe to bring separate time and
date columns into a single column that contains DateTime elements. I was
thinking this would work:

dateForm = Dates.DateFormat("d-u-y H")
newMachineData = @byrow! MachineData begin
@newCol DT::Array{DateTime}
:DT = DateTime(string(:DATE, " ", :HOUR), dateForm)
end

However, the error with @newCol is raised. It's likely I'm missing
something simple though. I am new to Julia

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#54

[nalimilan]

Yes, last version was in December, and these functions are newer than that AFAIK. It's indeed always confusing that you get the development version of the README when you browser a GitHub project. In the long-term, I guess documentation should move to Documenter.jl anyway.

[dun10p]

Thank you guys! I apologize for the mistake.