Beefy Boxes and Bandwidth Generously Provided by pair Networks
Do you know where your variables are?
 
PerlMonks  

Re^12: 99 Problems in Perl6

by gaal (Parson)
on Dec 17, 2006 at 18:04 UTC ( #590327=note: print w/ replies, xml ) Need Help??


in reply to Re^11: 99 Problems in Perl6
in thread 99 Problems in Perl6

Similar syntax exists in Haskell and is called a guard.

-- Here the |s should be read as one vertical line, like a mathematica +l function def. fact n | n == 0 = 1 | otherwise = n * fact (n - 1) -- Here's the same thing in different style, the same one as I'd used +earlier and -- called "declarative", sometimes called direct pattern matching, bec +ause each -- variant gets to bind whatever it managed to match. fact 0 = 1 fact n = n * fact (n - 1)

There are plenty of non-syntactic variations on this theme. The scanl one is my favorite.


Comment on Re^12: 99 Problems in Perl6
Download Code

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://590327]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others surveying the Monastery: (12)
As of 2014-09-02 15:28 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    My favorite cookbook is:










    Results (25 votes), past polls