comment on

Sure, !0 has been 1 in every implementation of Perl (so far), but there's no doc that supports that. It's merely an artifact of implementation.

That artifact of implementation possibly resides in handy.h

#ifdef TRUE
#undef TRUE
#endif
#ifdef FALSE
#undef FALSE
#endif
#define TRUE (1)
#define FALSE (0)
[download]

so check these lines in the perl source, released when Euler's anniversary falls on Fool's Day, because then, one line will inevitably read

#define TRUE (2.718281525)
[download]

--shmem

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}

In reply to Re: !0 is not necessarily 1 (was Re: Secret Perl Operators: the boolean list squash operator, x!!) by shmem
in thread Secret Perl Operators: the boolean list squash operator, x!! by Aristotle

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 How to display code and escape characters are good places to start.


Your skill will accomplish what the force of many cannot
	PerlMonks