15 Oct
2010
15 Oct
'10
12:51 p.m.
Chris Cannam wrote:
On Fri, Oct 15, 2010 at 10:38 AM, R. Mattes
<rm(a)mh-freiburg.de> wrote:
> 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
$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/