y bits to the left, i.e.
x << y. Mathematically this
is equivalent to \(x\cdot 2^y\).
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
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 left-shift operator can only be applied to integer columns, and the resulting column will have the same stype as its argument.
The arguments must be either
FExprs, or expressions that can be
An expression that evaluates
x << y.
__rshift__(x, y)– right shift.
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