gens
Gleam generators and lazy infinite lists!
gleam add gens
LazyList
import gleam/int
import gens
pub fn main() -> Nil {
gens.new()
|> gens.map(fn(x) { x + 3 })
|> gens.filter(fn(x) {x % 2 != 0 })
|> gens.map(int.to_string)
|> take(5)
|> echo
// -> ["3", "5", "7", "9", "11"]
Nil
}
Generator
import gens
import gleam/option
pub fn main() -> Nil {
let counter =
gens.Generator(state: 0, next: fn(c) { option.Some(#(c, c + 1)) })
let #(nums, counter2) = gens.gen(counter, 5)
echo nums
// -> [0, 1, 2, 3, 4]
echo counter2.state
// -> 5
Nil
}