How to change field names and types of a DataFrame

[hendri54]

Someting like

df[!, :x2] = convert.(Int, df[:, :x2])

will change types types. Note the ! and :. See

DataFrames: convert column data type

Was looking around, but didn’t find an answer. Specifically, I have a DataFrame and one column has data type Int64; it has the unique values 0 and 1 (meaning obviously false and true). What is the easiest quickest way to have the column including its entries converted to the boolean data type? I thought about a kind of loop, but are there already existing functions available that I should know of? More generally, please explain how to best tackle this (especially conceptually), if using a se…