Add (Arraylist function)

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Add Arraylist items (Arraylist class)

This callable function adds an item to the end of an Arraylist.

Syntax

[%count =] al:Add( itemList)

Syntax terms

%count An, optional, numeric variable that returns the number of items in the indicated Arraylist after the items have been added. %count is also the item number associated with the last or only added item in the Arraylist.
al An Arraylist object.
itemList Under Sirius Mods 7.9 and later, this is a comma-delimited set of a combination of one or more of these:
  • Values or variables of the same type as specified on the al declaration
  • Collections of objects of the same type as specified on the al declaration

Each of these, from left to right, becomes an item or items in the method object Arraylist.

Under Sirius Mods 7.8 and earlier, itemList is only a single item to be added to al: a value or variable of the same type as specified on the al declaration, or a value or variable convertible to that type.

Usage notes

  • The Push and Enqueue functions are the same as the Add function, with the exception that Push and Enqueue can only add a single item to the target Arraylist, while (under Sirius Mods 7.9 and later) Add can add many items to the target Arraylist:
    • Push was designed as a convenience for use with the Pop function.
    • Enqueue was designed as a convenience for use with the Dequeue function.

Examples

For more examples of Add calls, see "Arraylist class".

Adding numbers to an Arraylist

In the following example, a literal number, a numeric variable and another Arraylist of numbers is added to an Arraylist:

b %nums is arraylist of float %perfect is float %primes is arraylist of float %nums = list(0, 1) %perfect = 6 %primes = list(2, 3, 5, 7, 11, 13, 17, 23) %nums:add(16, %perfect, %primes) %nums:print end

This outputs:

1: 0 2: 1 3: 16 4: 6 5: 2 6: 3 7: 5 8: 7 9: 11 10: 13 11: 17 12: 23

Adding objects to an Arraylist

In the following example, a new object, an object variable and another Arraylist of objects is added to an Arraylist:

b class coordinate public constructor new(%x is float, %y is float) function toString is longstring variable x is float variable y is float end public constructor new(%x is float, %y is float) %this:x = %x; %this:y = %y end constructor function toString is longstring returnText coordinate: x={%x}, y={%y} end function end class %points is arraylist of object coordinate %where is object coordinate %locations is arraylist of object coordinate %points = list(new(6, 9), new(-4, 3)) %where = new(17, -3) %locations = list(new(1, 1), new(2, 5), new(3, 11)) %points:add(new(4, 3), %where, %locations) %points:print end

This outputs:

1: coordinate: x=6, y=9 2: coordinate: x=-4, y=3 3: coordinate: x=4, y=3 4: coordinate: x=17, y=-3 5: coordinate: x=1, y=1 6: coordinate: x=2, y=5 7: coordinate: x=3, y=11

See also