@= (APPEND)

Purpose:

Appends a series onto an existing series.

series1 @= series2

series1	-	A series, the destination series to append onto.
series2	-	A series. The series to append to the destination series.

Nothing, one or more series are appended to the destination series in place.

a = {1, 2, 3}

b = {10, 11, 12}

a @= b

Series a contains the values {1, 2, 3, 10, 11, 12}.

a = {1, 2, 3}

b = {10, 11, 12}

a @= 10*b

Series a contains the values {1, 2, 3, 100, 110, 120}.

Because @= appends the series to the destination in place, a series result is not returned. See CONCAT to return a series.

@= is much faster than CONCAT for large series because @= operates on the existing series whereas CONCAT creates and assigns a new series.

a @= b is equivalent to append(a, b).