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DeathArrow · 2022-05-16 23:46:17

You can take a look at C# generics. They are quite simple.

mwsherman | karma 3566 | avg karma 5.6 · | 2011-05-17 20:56:32

You really ought to check out Linq. C# generics and lambdas are really nice too.

jayd16 | karma 10887 | avg karma 2.09 · | 2022-01-24 13:53:34

Check out C# and LINQ. They pull it off with anonymous types.

velox_io | karma 407 | avg karma 1.56 · | 2015-06-01 01:53:54

This is why I like C# so much, you can go from LINQ & generics to pointers. So much versatility.

fauigerzigerk | karma 15398 | avg karma 2.9 · | 2012-09-20 12:26:42+00:00

Kind of like arrays in C or in pre generics Java and C#. Definitely not ideal but not that unusual either.

mda | karma 1912 | avg karma 2.04 · | 2019-08-04 09:53:54+00:00

I tried your search, all results are about C# classes, generics etc.

kaba0 | karma 9701 | avg karma 1.18 · | 2023-09-19 12:34:59

Not sure if C# can do that, but java’s implementation can return an arbitrary object based on the templates/parameters.

masklinn | karma 65147 | avg karma 3.36 · | 2015-11-16 18:47:42+00:00

That's an option, but it requires a significantly more complex generics runtime.

Gibbon1 | karma 7778 | avg karma 1.11 · | 2021-02-01 04:59:42+00:00

C# has an is operator as well. I found it useful with generics.

idobai | karma 7 | avg karma 0.06 · | 2017-07-18 20:57:05+00:00

mono and .net are no better at such situations. also, if you want value types, there is scala.

seanmcdirmid | karma 34701 | avg karma 1.77 · | 2014-06-15 19:38:22+00:00

Ah, this is exactly the approach I took in C# (though with a small range of branded types to stand in for numbers). Thanks for clearing this up!

dullgiulio | karma 1464 | avg karma 2.78 · | 2018-09-02 02:22:11

And that has a baggage of problems. The best way is what C# does, which incidentally is also what Go does with maps:https://dave.cheney.net/2018/05/29/how-the-go-runtime-implem...

torginus | karma 3105 | avg karma 3.04 · | 2022-03-30 23:02:53

This is essentially how C# generics have worked since forever. If you want performance, don't use pointer type arguments.

titzer | karma 17889 | avg karma 4.42 · | 2022-08-09 12:18:53

Generics, LINQ, structs, delegates, to name just four.

Rusky | karma 4294 | avg karma 3.38 · | 2010-08-07 20:54:49+00:00

That example, in a statically-typed language could be handled with overloading or polymorphism, which are both far more concise IMO.

C#'s standard library, for example, has common interfaces for collections so the code will still work on all kinds of lists, arrays, etc.

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alkonaut | karma 22123 | avg karma 2.58 · | 2014-09-29 11:36:46+00:00

Yes and you do things in Java like create an MyIntCollection to get around the shortcomings of generics wrt. primitives, but the point is that it is just that: workarounds.

What I really want is for perf to be good while the code is still clean/readable/expressive/idiomatic. In Java/C# you must usually write idiomatic+slow and then refactor into fast kludges.

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victorantos | karma 18 | avg karma 0.09 · | 2012-11-15 19:19:59+00:00

I just love the generic 'List' class from C# - a modern data structure.

GFischer | karma 4842 | avg karma 1.42 · | 2011-02-20 08:01:11

It does seem you can handle them, but we .NET people are lazy (as in, Larry Wall lazy http://en.wikipedia.org/wiki/Larry_Wall ).

I agree with the poster's reply to that: "Yes I agree that this is simple and fast, but.. What I really want is a 1-D list of my own object types." I get that when using XML web services with .NET (though mostly when consumed with other .NET or similar languages !!! which goes against it being an universal data transfer language )

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Deregibus | karma 285 | avg karma 4.83 · | 2014-05-07 14:30:18+00:00

Very cool. Anonymous types can be really handy in C#, especially when dealing with LINQ to objects code. This looks like it could be a similar fit.

hakanderyal | karma 1396 | avg karma 5.47 · | 2023-04-26 15:03:55

Record types introduced in C# 9 solves this.

It's now as simple as

record SomeData(string Name, int Id);

Which gives you an immutable object, auto generated constructor, and some additional helpers to make life easier.

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