[bbrik]

C# has just implemented nested functions.

[kwhitefoot]

There is a nice blog post that concisely explains why local functions are better than lambdas: https://asizikov.github.io/2016/04/15/thoughts-on-local-func...

[WalterBright]

C#: "Local functions can not be static."

Static nested (i.e. local) functions in D can be static. What that does is prevent the function for accessing locals in the enclosing scope(s).