This is great! TypeScript (another Microsoft language) did something similar not long ago but used a flag to opt-in to strict null checks. It seems this setting

This is great! TypeScript (another Microsoft language) did something similar not long ago but used a flag to opt-in to strict null checks. It seems this setting is strongly encouraged. Looking at the examples, the compiler can determine if not null by reading the if statement like so if (str != null) But what about if the code uses the following? if (!string.IsNullOrEmpty(str)) TypeScript has a way to solve this using the `is` keyword but I'm not sure if this is introduced in C# yet.