<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="">I’m happy that the rename was accepted. I’d like to support renaming it to<span class="Apple-converted-space"> </span></span><b class="" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;">filterMap</b><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=""> because it uses two terms of art already pre-existing and understood by the Swift community</span></div></blockquote></div>Odd… exactly that is the reason why I think filterMap is the worst choice:<div class="">Both are established terms of art, but one has a meaning that doesn’t fit to the operation.</div><div class="">Applying filter can remove elements, but it can never change types (I feel kind of silly to repeat this over and over, but so far, nobody took the time to falsify this).</div><div class=""><br class=""></div><div class="">So, I’d rather introduce a unburnt word than reuse an existing term that conveys a wrong message. Honestly, I’d consider „reduceMap“ less bad… but I can’t see any good reason to limit the choice to something that is already used in Swift — after all, we don’t have to pay for new names.</div><div class=""><br class=""></div></body></html>