From: KONTRA Gergely <kgergely@...>
Date: 2003-05-13T22:54:09+09:00
Subject: Re: Ruby OO? sin method? puts method? @@?

On 0513, nobu.nokada@softhome.net wrote:
> > Than why not sin is a method?
> To fit to mathematical notation.
???
I write sin(0.5) but also abs(0.5)
So I don't know why the difference, and why cannot a number tell it's
sin. This is analogous to "asdf".length and the others...

> > And puts?
> puts is a method of IO class.
>   STDERR.puts "asdf"
> Or you can use Kernel#display.
>   "asdf".display(STDERR)
Again confusing for me...
Which approach uses ruby?
IO.puts(what) or what.puts(IO=stdout) and why it is not consistent.
The string displays itself, or the filehandle displays the string?

Or has ruby a habit in the core and not a concept?

Another ugliness in the syntax, which bothers me is the @ and @@ (and
will be @@@ ??) notation, which I think doesn't fit into the view.
Does anybody know the root of it?
In one side ruby tries to avoid the rude $ variables, but on the other
hand has @ and @@ variables (members)...

Gergo
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