Upcoming features in C# (the text contains some extraneous chars, like in the 0b0010\_1110; literal):

https://gist.github.com/anonymous/9997622

Declaring out arguments at the calling point is nice, but returning a tuple as in Python/Haskell is better:

GetCoordinates(out var x, out var y);


It's also nice the syntax to define struct/class members with the same name as class arguments as in Scala/TypeScript. But in D you can't use this syntax because those are template arguments:

class Customer(string first, string last) {

A solution is to use two groups, as for functions (but the default is the opposite for functions):

class Customer()(private const string first, private const string last) {

Bye,
bearophile

On Saturday, 5 April 2014 at 21:17:53 UTC, bearophile wrote:
> Upcoming features in C# (the text contains some extraneous chars, like in the 0b0010\_1110; literal):
>
> https://gist.github.com/anonymous/9997622
>
> Declaring out arguments at the calling point is nice, but returning a tuple as in Python/Haskell is better:
>
> GetCoordinates(out var x, out var y);

Returning a tuple is nice, but isn't the D way to return an "anonymous" struct(well, yes, it has a name, but that name is only defined inside the function that returns it...)?

At any rate, I think that C# feature will be more useful with control structures. Imagine using `TryParse` in the condition expression of an `if` statement, declaring there an out parameter that'll only be accessible in the scope of the `if` statement.

> It's also nice the syntax to define struct/class members with the same name as class arguments as in Scala/TypeScript. But in D you can't use this syntax because those are template arguments:
>
> class Customer(string first, string last) {
>
> A solution is to use two groups, as for functions (but the default is the opposite for functions):
>
> class Customer()(private const string first, private const string last) {

Instead of this confusing syntax, how about making them regular fields and marking them with a attribute that'll make the compiler add them to the default constructor:

class Customer{
    @default string first;
    @default string last;
}