<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class=""><div><blockquote type="cite" class=""><div class="">On May 17, 2016, at 7:48 AM, Neil Faiman via swift-users <<a href="mailto:swift-users@swift.org" class="">swift-users@swift.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div style="font-family: Alegreya-Regular; font-size: 15px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">“You can provide a default value for a stored property as part of its definition, as described in Default Property Values.<span class="Apple-converted-space"> </span><b class="">You can also set and modify the initial value for a stored property during initialization. This is true even for constant stored properties,</b><span class="Apple-converted-space"> </span>as described in Assigning Constant Properties During Initialization.” (Classes and Structures / Stored Properties)</div></div></blockquote></div><br class=""><div class="">You can assign the value of an as-yet-unassigned ‘let’ property, <i class="">once</i>. If that happens in the default initialization phase (before any initializer methods run), then you’ve used up that chance. The initializer would be setting a second value, which isn’t allowed.</div><div class=""><br class=""></div><div class="">Read up on the phases of initialization in the Swift book.</div><div class=""><br class=""></div><div class="">—Jens</div></body></html>