array.unshift()
Adds an element at the beginning of the array and shifts the rest of the elements to the right.
Introduced: 5.3.8.104
array.unshift( value=any )
Returns: Numeric
Examples
numbers = [ 1, 2, 3, 4 ];
Dump( numbers.UnShift( 0 ) ); //Outputs 5
moreNumbers = [ 5, 6, 7, 8 ];
Dump( moreNumbers.UnShift( 4 ) ); //Outputs 5