+1 since it makes it easy to get the number of possible enum values, but I thought I'd tell you: there's no "Wind" type in Pokémon. It's "Flying". <br><div class="gmail_quote"><div dir="ltr">On Sun, Jul 3, 2016 at 18:36 Gabriel Lanata via swift-evolution <<a href="mailto:swift-evolution@swift.org">swift-evolution@swift.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_quote"><div dir="ltr"><div class="gmail_quote"><div dir="ltr"><div class="gmail_quote"><div dir="ltr"><div>Hello, this has been proposed multiple times before in different ways. </div><div><div><font color="#333333"><br>Link to detailed proposal draft:</font></div><a href="https://github.com/gabriellanata/swift-evolution/blob/master/proposals/NNNN-allow-enumerating-cases-in-enumerations.md" target="_blank">https://github.com/gabriellanata/swift-evolution/blob/master/proposals/NNNN-allow-enumerating-cases-in-enumerations.md</a></div><div><br></div><div>It is currently not possible to enumerate through all the possible cases of an enumeration object without adding a hardcoded value or recurring to unsafe workarounds. The proposal is to add a method of obtaining an array or set of all the possible cases natively for enumerations without associated values.</div><div><br></div><div><div>The proposed solution is to i<span style="line-height:1.5">mplement a native `.cases` static var for all enumerations without associated </span><span style="line-height:1.5">values. This would provide a strict type-safe way of enumerating though the </span><span style="line-height:1.5">possible cases without risking runtime errors. The resulting code is a lot </span><span style="line-height:1.5">cleaner and less prone to errors caused by forgetting to update the hardcoded </span><span style="line-height:1.5">values when modifying cases.</span></div><div><br></div><div><div><div>Resulting code:</div><div> </div></div></div><div> enum PokemonType {</div><div> case Fire, Grass, Water, Wind</div><div> }</div><div> for pokemonType in PokemonType.cases {</div><div> // Do stuff</div><div> }</div><div> PokemonType.cases.count // Returns 4</div></div><div></div><div><br></div><div><br></div><div>-------</div><div>Gabriel</div><div><br></div></div></div></div></div></div></div></div>
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</blockquote></div><div dir="ltr">-- <br></div><div data-smartmail="gmail_signature"><div dir="ltr">-Saagar Jha</div></div>