Item (Arraylist property): Difference between revisions
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{{Template:Arraylist:Item subtitle}} | {{Template:Arraylist:Item subtitle}} | ||
[[Category:Arraylist methods|Item property]] | [[Category:Arraylist methods|Item property]] | ||
<!--DPL?? Category:Arraylist methods|<var>Item</var> property: Return or set Arraylist item value--> | <!--DPL?? Category:<var>Arraylist</var> methods|<var>Item</var> property: Return or set <var>Arraylist</var> item value--> | ||
<p> | <p> | ||
<var>Item</var> is a member of the [[Arraylist class]]. | <var>Item</var> is a member of the [[Arraylist class]]. | ||
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This ReadWrite property | This ReadWrite property | ||
returns or sets the indicated item in the Arraylist. | returns or sets the indicated item in the <var>Arraylist</var>. | ||
For additional description of this method, see [[Collections#Coding considerations for collections|Coding considerations for collections]]. | For additional description of this method, see [[Collections#Coding considerations for collections|Coding considerations for collections]]. | ||
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<table class="syntaxTable"> | <table class="syntaxTable"> | ||
<tr><th><i>%item</i></th> | <tr><th><i>%item</i></th> | ||
<td>A variable of the same type as specified on the '' | <td>A variable of the same type as specified on the ''<var class="term">al</var>'' declaration to contain the value of the specified ''<var class="term">al</var>'' item. Or a variable or value of the same type as specified on the ''<var class="term">al</var>'' declaration to be assigned to the specified ''<var class="term">al</var>'' item. </td></tr> | ||
<tr><th><i> | <tr><th><i><var class="term">al</var></i></th> | ||
<td>An Arraylist object. </td></tr> | <td>An <var>Arraylist</var> object. </td></tr> | ||
<tr><th><i>number</i></th> | <tr><th><i>number</i></th> | ||
<td>A whole number greater than 0 to identify an '' | <td>A whole number greater than 0 to identify an ''<var class="term">al</var>'' item by its position in the arraylist. If ''number'' is greater than the number of items in the ''<var class="term">al</var>'', or if it is less than or equal to zero, the request is cancelled.</td></tr> | ||
</table> | </table> | ||
==Usage notes== | ==Usage notes== | ||
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</pre> | </pre> | ||
<li>Methods are available to retrieve or seet the first or just the last item in | <li>Methods are available to retrieve or seet the first or just the last item in | ||
an Arraylist. | an <var>Arraylist</var>. | ||
See [[FirstItem (Arraylist property)|FirstItem]] and [[LastItem (Arraylist property)|LastItem]]. | See [[FirstItem (Arraylist property)|FirstItem]] and [[LastItem (Arraylist property)|LastItem]]. | ||
</ul> | </ul> | ||
Revision as of 02:29, 20 January 2011
Return or set Arraylist item value (Arraylist class)
Item is a member of the Arraylist class.
This ReadWrite property returns or sets the indicated item in the Arraylist.
For additional description of this method, see Coding considerations for collections.
Syntax
%currentItem = al:Item( number) al:Item( number) = newItem
Syntax terms
| %item | A variable of the same type as specified on the al declaration to contain the value of the specified al item. Or a variable or value of the same type as specified on the al declaration to be assigned to the specified al item. |
|---|---|
| al | An Arraylist object. |
| number | A whole number greater than 0 to identify an al item by its position in the arraylist. If number is greater than the number of items in the al, or if it is less than or equal to zero, the request is cancelled. |
Usage notes
- The Item keyword is not required.
For instance, in the For loop in the
Arraylist class example, print %alist(%i) is equivalent to:
print %alist:<var>Item</var>(%i)
- Methods are available to retrieve or seet the first or just the last item in an Arraylist. See FirstItem and LastItem.