The following table provides a list of the version and build numbers for each update to Office 365 ProPlus released in the following update channels: Monthly, Semi-Annual (Targeted), and Semi-Annual. Each entry in the table links directly to the release notes for that release. The release notes provide information about features, security updates, and non-security updates that are included in the update to Office 365 ProPlus.
By default, extract-key is applied to two list elements for every comparison, but if cache-keys? is true, then the extract-key function is used exactly once for each list item. Supply a true value for cache-keys? when extract-key is an expensive operation; for example, if file-or-directory-modify-seconds is used to extract a timestamp for every file in a list, then cache-keys? should be #t to minimize file-system calls, but if extract-key is car, then cache-keys? should be #f. As another example, providing extract-key as (lambda (x) (random)) and #t for cache-keys? effectively shuffles the list.