https://dlang.org/spec/hash-map.html#static_initialization:
immutable long[string] aa = [ "foo": 5, "bar": 10, "baz": 2000 ]; ==> Error: non-constant expression `["foo":5L, "bar":10L, "baz":2000L]` Also: I don't understand the error message: * What is non-constant in the *expression*? * And why should it be constant at all? (Removing "immutable" does not help...) diniz