note BrowserUk <blockquote><i></i></blockquote> <p>Because all of the [map]-based methods <i>construct, copy and later discard</i>, multiple, intermediary lists on their way to constructing the hash. <p>And the costs of doing large numbers of small memory allocations and deallocations add up; especially if they memory manager has to go to the OS a couple of times to expand the process memory pool. <p>Using [for] avoids constructing many of the intermediary lists. <div class="pmsig"><div class="pmsig-171588"> <hr /> <font size=1 > <div>With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'</div> <div>Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.</div> <div>"Science is about questioning the status quo. Questioning authority". </div> <div>In the absence of evidence, opinion is indistinguishable from prejudice. <p align=right> [http://thebottomline.cpaaustralia.com.au/|RIP Neil Armstrong]</p></div> </font> </div></div> 1008288 1008327