<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div><br class=""><blockquote type="cite" class=""><div class=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">Yeah but it seems clear from the return type so I am not sure that much confusion would really exist.</span></div></blockquote></div><div class=""><br class=""></div>Afaics, there already is lots of confusion — that’s the reason for me to write a sequence of posts in this topic, instead of an Optional ;-)<div class="">The word „flatten“ is a quite honest description, so I wonder why words like filter, remove, ignoring or skipping should be used instead.</div><div class=""><br class=""></div><div class="">„Compact“ would be less irritating, but I could imagine that it indicates something like eliminating repeated occurrences.</div><div class=""><br class=""></div><div class="">Tino</div><div class=""><br class=""></div><div class="">(I’m quite close to attach a hand-drawn illustration of the flatMap process — I don’t think you want that to happen ;-)</div><div class=""><div class=""><br class=""></div></div></body></html>