datatable.FExpr.__ne__()

Compare whether values in columns x and y are not equal.

Like all other FExpr operators, the equality operator is elementwise: it produces a column where each element is the result of comparison x[i] != y[i].

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 inequality operator can be applied to columns of any type, and the types of x and y are allowed to be different. In the latter case the columns will be converted into a common stype before the comparison.

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. The produced column will have stype bool8.