Add (Arraylist function): Difference between revisions

From m204wiki
Jump to navigation Jump to search
Line 27: Line 27:


==Examples==
==Examples==
For examples of <var>Add</var> calls, see [[Arraylist class]].
For more examples of <var>Add</var> calls, see [[Arraylist class]].
===Adding numbers to an Arraylist===
In the following example, a literal number, a numeric variable and another <var>Arraylist</var> of numbers is added to an <var>Arraylist</var>:
<p class="code">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
</p>
This outputs:
<p class="output">1: 0
2: 1
3: 16
4: 6
5: 2
6: 3
7: 5
8: 7
9: 11
10: 13
11: 17
12: 23
</p>
===Adding objects to an Arraylist===
In the following example, a new object, an object variable and another <var>Arraylist</var> of objects is added to an <var>Arraylist</var>:
<p class="code">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
</p>
This outputs:
<p class="output">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
</p>


==See also==
==See also==
{{Template:Arraylist:Add footer}}
{{Template:Arraylist:Add footer}}

Revision as of 02:34, 14 March 2011

Add Arraylist items (Arraylist class)

Add 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 item has 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 can be a comma-delimited set of values or variables of the same type as specified on the al declaration or 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 can only be a single value or variable of the same type as specified on the al declaration, or a value or variable convertible to that type to be added to the al Arraylist object.

Of course, a single value or variable is just a single item list so can be specified under Sirius Mods 7.9 and later, too.

Usage notes

  • The Push and Enqueue functions are the same as the Add function:
    • 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