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! :-)
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.
| & || & |
| < || < |
| > || > |
| [ || [ |
| ] || ] ||