class Channel(T)

• Channel(T)
• Reference
• Object

Overview

A Channel enables concurrent communication between fibers.

They allow communicating data between fibers without sharing memory and without having to worry about locks, semaphores or other special structures.

channel = Channel(Int32).new

spawn do
  channel.send(0)
  channel.send(1)
end

channel.receive # => 0
channel.receive # => 1

NOTE Although a Channel(Nil) or any other nilable types like Channel(Int32?) are valid they are discouraged since from certain methods or constructs it receiving a nil as data will be indistinguishable from a closed channel.

Defined in:

concurrent/channel.cr

Instance Method Summary

• #parallel(*, fibers : Int32 = System.cpu_count.to_i)

  TODO better error handling * See Concurrent::Stream

  EXPERIMENTAL

Instance Method Detail