Static Indexers

[osamakawish]

This is just a convenience and I can easily work around this, but it cleans up the code a bit.

Basically it arises from situations where I collect all initiations of a given type into a list, then want to index it.

public class T {
    private static List<T> Ts { get; set; }
    public static T this[int i] => Ts[i];
}

It's an oversimplified example. And it can already be worked around via public static T Get(int i) or public static void Set(int i, T value) methods. But a minor suggestion that helps in some contexts.

Usage

T[5].DoStuff();

I know it looks ridiculous given the way the indexer is defined via a this statement and all, but it's a suggestion. Maybe the notation can be changed though, to something like:

public static T T[int i] => Ts[i];

[huoyaoyuan]

I wonder if there are any potential syntax ambiguous.

There is also slight inconsistency. You declared the indexer with this, but you cannot call it with this.

Allowing parameterized property in C# (explicitly naming the indexer) gives more clear semantics.

Static named indexer is supported in VB and IL, but cannot be represented in C#.

[svick]

Previous discussion: #526.