Adds nullable versions of nullable! for copies rather than inplace.
Adds tests to check proper handling of CategoricalArrays. Adds a
similar_nullable function that will check the size of the Array.
Converts a nullable! call that operated over the entire datatable
to use a new nullable! func that operates over all columns.
Adds nullable versions of nullable! for copies rather than inplace. Adds tests to check proper handling of CategoricalArrays. Adds a similar_nullable function that will check the size of the Array. Converts a nullable! call that operated over the entire datatable to use a new nullable! func that operates over all columns.
This should help with https://github.com/JuliaData/DataTables.jl/pull/66#discussion_r117847786