Beefy Boxes and Bandwidth Generously Provided by pair Networks
laziness, impatience, and hubris
 
PerlMonks  

Re^2: Previously unseen error in connection with -X functions

by blazar (Canon)
on Oct 31, 2008 at 13:44 UTC ( #720701=note: print w/ replies, xml ) Need Help??


in reply to Re: Previously unseen error in connection with -X functions
in thread Previously unseen error in connection with -X functions

Here's another way to see -e isn't a function:

I personally believe that it's too bad it isn't. Actually, it even seems one, not to mention that its documentation is available under perldoc -f -X! Of course Perl 6 knows better by making all operators actual functions. But I wouldn't dare asking that much in 5's realms: perhaps one difficulty in this sense is the new stacking facility la -f -w -x $file however AIUI from the docs that's just syntax fancy. Which I read in the sense that the parser takes care of it making it into the equivalent of -x $file && -w _ && -f _, but at this point ideally those tests may be overridden and without interfering at all with the additional magic, which would be completely orthogonal.

--
If you can't understand the incipit, then please check the IPB Campaign.


Comment on Re^2: Previously unseen error in connection with -X functions
Select or Download Code
Re^3: Previously unseen error in connection with -X functions
by JavaFan (Canon) on Oct 31, 2008 at 14:30 UTC
    I think one of the reasons -f isn't a function is that it violates the naming rules. Identifier names have to start with letters, and dashes are not allowed. -f violates that. Changing it would probably mean changing the lexer. Which I don't think many people are willing to do.

    perhaps one difficulty in this sense is the new stacking facility la -f -w -x $file however AIUI from the docs that's just syntax fancy. Which I read in the sense that the parser takes care of it making it into the equivalent of -x $file && -w _ && -f _,
    I was under the impression that the stackability was archieved by -f and friends returning magical values. But if there's magic, if doesn't show with Devel::Peek::Dump, so I'm probably wrong in my impression.

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://720701]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others perusing the Monastery: (4)
As of 2014-11-23 03:51 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    My preferred Perl binaries come from:














    Results (128 votes), past polls