parallel_map
Note: This package only works for the erlang target.
This is a simple gleam library that adds a iterator_pmap
and list_pmap
,
which has a similar behaviour and interface as iterator.map
and list.map
,
except it runs in parallel by spawning extra processes to do the work.
gleam add parallel_map
import gleam/list
import gleam/iterator
import gleam/result
import parallel_map.{MatchSchedulers, WorkerAmount}
pub fn main() {
let map_func = fn(a: Int) -> Int {a * a}
let iterator_input = iterator.range(0, 1000)
iterator_input
|> iterator.map(map_func)
// can be rewritten as
iterator_input
|> parallel_map.iterator_pmap(map_func, WorkerAmount(16), 100)
|> iterator.map(result.unwrap(_, -1))
let list_input = list.range(0, 1000)
list_input
|> list.map(map_func)
// can be rewritten as
list_input
|> parallel_map.list_pmap(map_func, MatchSchedulersOnline, 100)
|> list.map(result.unwrap(_, -1))
}
Further documentation can be found at https://hexdocs.pm/parallel_map.
Development
gleam run # Run the project
gleam test # Run the tests
gleam shell # Run an Erlang shell