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DataFrame: need API to query number of colums without fetching the column #808

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gicmo opened this issue Apr 4, 2020 · 0 comments
Open

DataFrame: need API to query number of colums without fetching the column #808

gicmo opened this issue Apr 4, 2020 · 0 comments

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@gicmo
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gicmo commented Apr 4, 2020

It seems only std::vector<Column> DataFrameHDF5::columns() exists, but there should be a way to query the number of cols without fetching the contents.
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