---
name: "Perlude::Lazy"
section: "3pm"
platform: "linux"
package: "libperlude-perl"
version: "0.61-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/Perlude::Lazy"
---

# 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