georani wrote:

Not in this case, StopWatch is sufficient.

Benchmark.NET makes sure that code is warmed up properly, eliminating simple things like tiered compilation whose defaults may have changed between .NET versions, for example. It also makes it fairly trivial to compare different runtimes: it is, after all, the tool that Microsoft itself uses for comparison of runtimes (to consciously decide when performance regressions are acceptable).

Var should be used whenever the type is obvious from the RHS. Most of the time, nobody cares about the specific type of a variable, yet explicitly declaring the type forces maintainers to read it 100% of the time. It's also less DRY: it would be silly to say, "Today I washed my car today". The counterpart is a newer feature that lets us instantiate without the explicit type, which arguably should only be used when the type is obvious: private Dictionary> _lookupTable = new();

Not fun, but it could be fixed pretty easily with a regex search and replace.