You seem to be right. It looks like DMD is pretty good at optimizing if statements. The Hash version is quite a bit slower actually.
Well, that's what happens when I assume things. :) Here's a little benchmark of searching an array and hash of randomly generated strings: http://pastebin.com/GddUn3e3 On my system (in milliseconds): Length: 128 Hash Foreach: 334 Array Foreach: 61 Hash Lookup: 6 Array Lookup: 31 I guess what I was really looking for is syntax sugar that expands this: if (variable in value1, value2, value3, value4) into this: if (variable == value1 || variable == value2...) or something of that sort. Otherwise my Hash/hash functions are pretty useless. Sorry for not researching before opening the topic.
