And as for the type-based multi-dispatch case, we can observe below that Perl 5 does have the notion of runtime types:
A:~ au$ perl -MDevel::Peek -e 'Dump 3'
SV = IV(0x100827190) at 0x100827198
REFCNT = 1
FLAGS = (IOK,READONLY,pIOK)
IV = 3
A:~ au$ perl -MDevel::Peek -e 'Dump "3"'
SV = PV(0x100801258) at 0x1008271b0
REFCNT = 1
FLAGS = (POK,READONLY,pPOK)
PV = 0x100207f60 "3"\0
CUR = 1
LEN = 16
Note that the IV above refers to an integer type, and PV refers a stringish type. (cf. perlguts for details...)
As for the casting functions, Perl 5 has them built-in:
"".$x # to string
0+$x # to number
int($x) # to integer
Hope that helps! :-)
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link or
or How to display code and escape characters
are good places to start.
|