Perlude::Lazy(3pm)

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 relevant. just replace sub by enlist