Inserts value to the front or back of the container. stuff
can be a value convertible to the container's element type or a range
of values convertible to it. The stable version behaves the same, but
guarantees that ranges iterating over the container are never
invalidated.
Inserts value to the front or back of the container. stuff can be a value convertible to the container's element type or a range of values convertible to it. The stable version behaves the same, but guarantees that ranges iterating over the container are never invalidated.