Re: Is Ruby On Rails, Delphi's lost cousing?

Barry Kelly wrote:

"Paul Nichols (TeamB)" <paul@xxxxxxxx> wrote:

C# is nothing more than a Java clone.

Begging your pardon, but I've programmed for several years in both
languages and I far prefer C# - especially C# 2.0, with anonymous
delegates. The closest analogue in Java is anonymous classes, but they
don't capture variables in the same way (i.e. no non-final values
captured) and they end up more verbose. Delegates as a first-class
language feature alone makes me happier using it.

You can do the same with Java using inner classes and reflection and
introspection. In fact, I have a library that gives me the same
functionality. No biggie.

There are things you get with this first-class support like covariance
of return type and contravariance of parameter types in implicit
conversions of method groups to delegate-typed values that you don't get
easily using something analogous in Java that works with classes
instead.

I would agree. Java Mustang does have some of this same functionality.

d parameters, has fundamentally changed the way I program.

Another thing is the synergy between iterators, generics and foreach.
One can find all kinds of imaginative uses for IEnumerable<T> that don't
involve collections, given how easy it is to implement IEnumerable<T> -
you don't even have to write a class. This can bring functional language
ideas in. For example, given an IEnumerator<char> e, I've written some
things:

---8<---
Algo.SkipWhile(e, char.IsDigit);
// ...
Algo.SkipWhile(e, Algo.Not(Algo.Equals('\n')));
--->8---

Where Algo.Not and Algo.Equals return values of type Predicate<T>.


Look at Java 1.5. This type of functionality is available in Java. The
enhanced for loop takes care of a lot of these considerations.

Autoboxing takes care of many of these differences as well.
.

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