Append a single element.
Note: an Array or range will be appended as one single element of type Array, *not* concatenated to this Array. Use appendRange or appendArray to concatenate/chain ranges or Arrays into one.
See Implementation
Append a single element.
Note: an Array or range will be appended as one single element of type Array, *not* concatenated to this Array. Use appendRange or appendArray to concatenate/chain ranges or Arrays into one.