There are some questions about the setup of the site that get asked time and time again on Meta. These include allowing code-golfing languages, language-based handicaps, duplicate-closing on the main site, and others. Whenever these questions are asked, they are immediately closed as duplicates,...

I've got a C# string extension method that should return an IEnumerable<int> of all the indexes of a substring within a string. It works perfectly for its intended purpose and the expected results are returned (as proven by one of my tests, although not the one below), but another unit test has d...