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Chris Cannam wrote:
> On Fri, Oct 15, 2010 at 10:38 AM, R. Mattes  wrote:

quoted text
> > On Fri, 15 Oct 2010 10:20:45 +0100, Chris Cannam wrote

> >> How about Perl?

> >

> > Pretty much at the same location that Python and Ruby.

Yes, Perl is not much different in this regard from those two; strict

runtime type checking. Its been a long time since I looked at Perl,

but I think that Perl does small amount of compile time checking; the

language distinguishes between scalars, arrays and dictionaries by

(from memory) use of $scalar, @array and %dict.
However, elements within an array like:
    @array = ( 1, "two", $value );
are all just objects with type information to distinguish between

the int, string and the scalar.
> Well, you can do things like

quoted text
>

> $x = 1;

> $y = "2";

> $z = $x + $y;

>

> where the result is the number 3.

>

> But yes, I guess that's a consequence of implicit conversion rather

> than lack of type information.

Exactly. The types are checked and an implicit conversion from int

to string is performed on $x and then the '+' operator then concatenates

the two strings.
Cheers,

Erik

--

----------------------------------------------------------------------

Erik de Castro Lopo

http://www.mega-nerd.com/

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