Perlude::Lazy

An experimentation of implementing real lazy lists in Perl5. For real world usecases, please use Perlude instead.

SYNOPSIS

Haskell prelude miss you when you write perl stuff? Perlude is a port of the most common keywords. Some other keywords where added when there is no haskell equivalent.

Example: in haskell you can write

            

              
              
nat        = [0..]
is_even x  = ( x `mod` 2 ) == 0
evens      = filter is_even
main       =  mapM_ print
    $ take 10
    $ evens nat
            
          

in perlude, the same code will be:

            

              
              
use Perlude;
my $nat = enlist { state $x = 0; $x++ };
sub is_even { ($_ % 2) == 0 }
sub evens   { filter {is_even} shift }
traverse {say} take 10, evens $nat
            
          

FUNCTIONS

all the Perlude documentation is relevent. just replace sub by enlist