ers may also pass an optional third parameter to pool's constructor. This parameter is of type size_type, and sets a maximum size for allocated chunks. When this parameter takes the default value of 0, then there is no upper limit on chunk size.</p>
<p>Finally, if the doubling algorithm results in no memory being allocated, the pool will backtrack just once, halving the chunk size and trying again.</p>
<p><span class="bold"><strong>UserAllocator type</strong></span> - the method that the Pool will use to al