datatable.FExpr.__mul__()

datatable.FExpr.

__mul__

(

x

,

y

)

sourcetests

Multiply two FExprs together, which corresponds to python operator *.

If x or y are multi-column expressions, then they must have the same number of columns, and the * operator will be applied to each corresponding pair of columns. If either x or y are single-column while the other is multi-column, then the single-column expression will be repeated to the same number of columns as its opponent.

The multiplication operation can only be applied to numeric columns. The resulting column will have stype equal to the larger of the stypes of its arguments, but at least int32.

Parameters

x

,

y

FExpr

The arguments must be either FExprs, or expressions that can be converted into FExprs.

return

FExpr

An expression that evaluates x * y.