Beefy Boxes and Bandwidth Generously Provided by pair Networks
Just another Perl shrine
 
PerlMonks  

Re^2: Counting positive numbers

by eyepopslikeamosquito (Chancellor)
on Jun 29, 2010 at 13:18 UTC ( #847120=note: print w/ replies, xml ) Need Help??


in reply to Re: Counting positive numbers
in thread Counting positive numbers

Using ~~ inchworm secret operator saves a stroke:

#1234567890123456789012 perl -wle "print~~map{1..<>}2..<>"
Update: The inchworm secret operator is more clearly described here. I remember it from good old TPR0 way back in 2002. You can read all about TPR0 and the other early Perl golf tournaments by downloading Terje/mtv's excellent Book of Perl Golf.

Relaxing the first line restriction allows 20 strokes (which can probably be further shortened):

#12345678901234567890 perl -pe "$.>1&$_>0and$\+=$_}{"
This time we use the }{ eskimo greeting secret operator in harness with Eugene's infamous $\ trick.


Comment on Re^2: Counting positive numbers
Select or Download Code

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://847120]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others contemplating the Monastery: (15)
As of 2015-07-31 20:29 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









    Results (281 votes), past polls