List (Arraylist function): Difference between revisions

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object, with an explicit class name, or with an object variable,
object, with an explicit class name, or with an object variable,
even if that object is null:
even if that object is null:
<pre style="xmp">
<p class="code"><var class="term">al</var> = <var>List</var>(&'italic(itemlist))
    <var class="term">al</var> = <var>List</var>(&'italic(itemlist))
<var class="term">al</var> = %(<var>Arraylist</var>):<var>List</var>(&'italic(itemlist))
    <var class="term">al</var> = %(<var>Arraylist</var>):<var>List</var>(&'italic(itemlist))
<var class="term">al</var> = <var class="term">al</var>:<var>List</var>(&'italic(itemlist))
    <var class="term">al</var> = <var class="term">al</var>:<var>List</var>(&'italic(itemlist))
</p>
</pre>
:note
:note
If using the second of these syntax options, which explicitly indicates the
If using the second of these syntax options, which explicitly indicates the
class, both the collection and item datatypes must be
class, both the collection and item datatypes must be
specified exactly as they are on the collection variable's declaration:
specified exactly as they are on the collection variable's declaration:
<pre style="xmp">
<p class="code"><var class="term">al</var>  is collection <var>Arraylist</var> of longstring
    <var class="term">al</var>  is collection <var>Arraylist</var> of longstring
<var class="term">al</var>  = %(<var>Arraylist</var> of longstring):<var>List</var>(&'italic(itemlist))
    <var class="term">al</var>  = %(<var>Arraylist</var> of longstring):<var>List</var>(&'italic(itemlist))
</p>
</pre>
<li>You can also use the <var>List</var> method in contexts where an <var>Arraylist</var> object
<li>You can also use the <var>List</var> method in contexts where an <var>Arraylist</var> object
is a method parameter.
is a method parameter.
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of 11 integer items that begins with 1 and whose subsequent items are,
of 11 integer items that begins with 1 and whose subsequent items are,
respectively, the sum of the preceding two integers:
respectively, the sum of the preceding two integers:
<pre style="xmp">
<p class="code">%fib    is collection arraylist of float
    %fib    is collection arraylist of float
%fib = list(1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89)
    %fib = list(1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89)
</p>
</pre>
<li>The following <var>List</var> call creates a new <var>Arraylist</var> instance whose
<li>The following <var>List</var> call creates a new <var>Arraylist</var> instance whose
items are objects of user class Freight:
items are objects of user class Freight:
<pre style="xmp">
<p class="code">class freight
    class freight
  public
      public
    variable a is float
        variable a is float
    variable b is float
        variable b is float
    constructor newf(%a is float, %b is float)
        constructor newf(%a is float, %b is float)
  end public
      end public
  ...
      ...
end class
    end class
  ...
      ...
%ark is arraylist of object freight
    %ark is arraylist of object freight
%ark = list(newf(11, 14), newf(4, 6), newf(9, 77),  -
    %ark = list(newf(11, 14), newf(4, 6), newf(9, 77),  -
            newf(-7, 1234))
                newf(-7, 1234))
</p>
</pre>
</ul>
</ul>
==See also==
==See also==
{{Template:Arraylist:List footer}}
{{Template:Arraylist:List footer}}

Revision as of 20:55, 28 January 2011

Construct and populate a new Arraylist (Arraylist class)


This shared function is a virtual constructor, or factory method, for Arraylists. The List method invokes the creation of a new Arraylist instance, then populates that instance with items that are, respectively, the values of the method arguments.

List is available in Sirius Mods version 7.3 and later.

Syntax

%newList = [%(Arraylist Of itemType):]List( itemList)

Syntax terms

al A declared or existing Arraylist object.
itemlist A comma-delimited set of values or variables of the same type as specified on the al declaration. Each of these, from left to right, becomes an item in the resultant new Arraylist, al.

Usage notes

  • For more information about factory methods, see ?? refid=vconst..
  • The maximum number of itemlist values is 62.
  • List is a constructor and as such can be called with no method object, with an explicit class name, or with an object variable, even if that object is null:

    al = List(&'italic(itemlist)) al = %(Arraylist):List(&'italic(itemlist)) al = al:List(&'italic(itemlist))

    note

    If using the second of these syntax options, which explicitly indicates the class, both the collection and item datatypes must be specified exactly as they are on the collection variable's declaration:

    al is collection Arraylist of longstring al = %(Arraylist of longstring):List(&'italic(itemlist))

  • You can also use the List method in contexts where an Arraylist object is a method parameter.

Examples

  • The following List method call creates a new Arraylist instance of 11 integer items that begins with 1 and whose subsequent items are, respectively, the sum of the preceding two integers:

    %fib is collection arraylist of float %fib = list(1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89)

  • The following List call creates a new Arraylist instance whose items are objects of user class Freight:

    class freight public variable a is float variable b is float constructor newf(%a is float, %b is float) end public ... end class ... %ark is arraylist of object freight %ark = list(newf(11, 14), newf(4, 6), newf(9, 77), - newf(-7, 1234))

See also