spelling error in one of the examples

[konkam]

Hello,

some of the examples give an error on julia 0.4.5

The following code

using DataArrays, DataFrames
using DataFramesMeta

df = DataFrame(x = 1:3, y = [2, 1, 2])

transform(df, newCol = cos(df[:x]), anotherCol = df[:x]^2 + 3*df[:x] + 4)
@transform(df, newCol = cos(:x), anotherCol = :x^2 + 3*:x + 4)

produces

ERROR: MethodError: * has no method matching *(::Array{Int64,1}, ::Array{Int64,1})

replacing ^ by .^ fixes the problem, ie:

transform(df, newCol = cos(df[:x]), anotherCol = df[:x].^2 + 3*df[:x] + 4)
@transform(df, newCol = cos(:x), anotherCol = :x.^2 + 3*:x + 4)

Best regards,