datatable.stype.__call__()

datatable.stype.

__call__

(

col

)

source

Cast column col into the new stype.

An stype can be used as a function that converts columns into that specific stype. In the same way as you could write int(3.14) in Python to convert a float value into integer, you can likewise write dt.int32(f.A) to convert column A into stype int32.

Parameters

col

FExpr

A single- or multi- column expression. All columns will be converted into the desired stype.

return

FExpr

Expression that converts its inputs into the current stype.