<[EMAIL PROTECTED]> wrote:
When you type "class Foo" in Java or C++, it does three things:
1. It declares a new type called "Foo".
2. It declares a _set_ of types (i.e. a "class").
3. It declares that the type Foo (and all of its subtypes) is a member
of the set of types Foo.
I would add:
G'day all.
Oh, one more thing.
Quoting Aaron McDaid <[EMAIL PROTECTED]>:
> Somebody more knowledgeable can describe the etymology of the terms,
[...]
You can think of a type as a set of values. For example, Bool is the
set { False, True }. A "class", then, is a set of types.
The distinction
G'day all.
Quoting Aaron McDaid <[EMAIL PROTECTED]>:
> 'class' in Haskell doesn't mean the same as 'class' in C++ or Java. I
> found it easier at first to thing of them as:
>A Haskell 'class' is more like a Java interface.
>Haskell types are more like what you might think of as 'class'es.
On Mon, Feb 26, 2007 at 01:22:57PM -0600, Thomas Nelson wrote:
> I'm brand new to haskell and I'm having trouble using classes. The basic
> idea is I want two classes, Sine and MetaSine, that are both instances of
> ISine. This way I can use the act method and recurse through the metasines
> an
Hello Thomas,
Thomas Nelson schrieb:
I'm brand new to haskell and I'm having trouble using classes. The
basic idea is I want two classes, Sine and MetaSine, that are both
instances of ISine. This way I can use the act method and recurse
through the metasines and sines.
That looks too much like
On 2/26/07, Thomas Nelson <[EMAIL PROTECTED]> wrote:
I'm brand new to haskell and I'm having trouble using classes. The basic idea
is I want two classes, Sine and MetaSine, that are both instances of ISine.
'class' in Haskell doesn't mean the same as 'class' in C++ or Java. I
found it easier a
All record fields are in the same namespace, and furthermore this is
also the same namespace of functions and class methods. In other words
you cannot have two record types containing the same field name, and you
cannot have a record field and a function using the same name, and you
cannot have
I'm brand new to haskell and I'm having trouble using classes. The basic idea
is I want two classes, Sine and MetaSine, that are both instances of ISine.
This way I can use the act method and recurse through the metasines and sines.
Here's my code:
module Main
where
class ISine a where
