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<concept id="GUID-DD3411FE-D95B-5153-8C90-442618920E20" xml:lang="en"><title>How

to reserve space in a fixed flat array</title><shortdesc>To be sure that there is sufficient space available to add new

elements to a fixed flat array, you can use the <codeph>SetReserveL()</codeph> function

to pre-allocate memory.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>

<p>When adding elements to a flat array of elements having the same length

(a <codeph>CArrayFixFlat&lt;class T&gt;</codeph> type) the array buffer may be

re-allocated to accommodate the extra elements. This can fail for lack of

memory.</p>

<p>If it is important to guarantee that the process of inserting elements

cannot fail at the time of insertion, then the necessary space in the array

buffer should be reserved in advance. This allows any out of memory situation

to be handled before starting to add elements to the array.</p>

<p><codeph>SetReserveL()</codeph> reserves sufficient space to accommodate

the required number of elements, in this case ten. </p>

<codeblock id="GUID-CF5FED7D-52D9-5247-8E25-DDD5813474E4" xml:space="preserve">CArrayFixFlat&lt;TElement&gt;* fixflat;

fixflat = new (ELeave) CArrayFixFlat<TElement>(3);

...

fixflat-&gt;SetReserveL(10);</codeblock>

<p>If the array already contains five elements, then another five elements

can be added to the array and be guaranteed not to fail for lack of memory.</p>