IsEmpty (SortedRecordset function): Difference between revisions

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{{Template:SortedRecordset:IsEmpty subtitle}}
<var>IsEmpty</var> returns a <var>[[Enumerations#Using_Boolean_enumerations|Boolean Enumeration]]</var> whose value is <code>True</code> if the set is empty (has no records), and is <code>False</code> if the set has records.


<span class="pageSubtitle"><section begin=dpl_desc/><section end=dpl_desc/></span>
==Syntax==
[[Category:SortedRecordset methods|IsEmpty property]]
{{Template:SortedRecordset:IsEmpty syntax}}
<p>
<var>IsEmpty</var> is a member of the <var>[[SortedRecordset class|SortedRecordset]]</var> class.
</p>


This property returns a
<var>[[Using Boolean enumerations|Boolean enumeration]]</var>) whose value is <var>True</var> if the
set is empty (has no records), and is <var>False</var> if the set has records.
==Syntax==
<p class="syntax">%bool = %srecs:IsEmpty
</p>
===Syntax terms===
===Syntax terms===
<table class="syntaxTable">
<table class="syntaxTable">
<tr><th>%bool</th>
<tr><th>%boolean</th>
<td>A declared enumeration object of type <var>Boolean</var> to contain the returned value of <var>IsEmpty</var>.
<td>An <var>Enumeration</var> object of type <var>Boolean</var> to contain the returned value of <var>IsEmpty</var>.</td></tr>
</td></tr>
 
<tr><th>%srecs</th>
<tr><th>sortedRecordset</th>
<td>A reference to an instance of a <var>SortedRecordset</var> object.
<td>A reference to an instance of a <var>SortedRecordset</var> object.</td></tr>
</table>


</td></tr></table>
==Usage Note==
==Usage Note==
<ul>
<ul>
<li>For convenience,
<li>For convenience, use <var>IsEmpty</var> when you simply need to test for an empty set of records; it is more efficient as testing the record <var>Count</var> for 0. Use the <var>[[Count (SortedRecordset property)|Count]]</var> property when you need the number of records.
use <var>IsEmpty</var> when you simply need to test for an empty set of records;
it is as efficient as testing the record <var>Count</var> for 0.
Use the <var>[[Count (SortedRecordset property)|Count]]</var> property
when you need the number of records.
</ul>
</ul>
==See also==
{{Template:SortedRecordset:IsEmpty footer}}

Latest revision as of 21:40, 12 November 2012

Is this SortedRecordset empty? (SortedRecordset class)

IsEmpty returns a Boolean Enumeration whose value is True if the set is empty (has no records), and is False if the set has records.

Syntax

%boolean = sortedRecordset:IsEmpty

Syntax terms

%boolean An Enumeration object of type Boolean to contain the returned value of IsEmpty.
sortedRecordset A reference to an instance of a SortedRecordset object.

Usage Note

  • For convenience, use IsEmpty when you simply need to test for an empty set of records; it is more efficient as testing the record Count for 0. Use the Count property when you need the number of records.

See also

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