Cont Library

Overview

The Cont module is a Ruby library that provides an implementation of continuations using the fiber library. Continuations are advanced control flow constructs that allow you to save the state of a computation at a certain point and then resume it later. This library is useful for managing complex control flows and implementing advanced features like coroutines, generators, and cooperative multitasking.

Installation

To use the Cont library, simply require it in your Ruby project:

require 'cont'

Usage

`Cont.reset`

Cont.reset limits the continuation to the current block. It takes a block of code and returns the result of that block.

Example

result = Cont.reset do
  # Your code here
  42
end
puts result # => 42

`Cont.shift`

Cont.shift captures the current continuation and allows you to resume it. It takes a block of code, which should call a lambda to resume the continuation.

Example

result = Cont.reset do
  Cont.shift do |cont|
    cont.call(42) + 1
  end
end
puts result # => 42

Exceptions

`Cont::DeadContinuationError`

This exception is raised when an attempt is made to resume a dead continuation.

`Cont::UnexpectedStatusError`

This exception is raised when an unexpected status is encountered.

License

MIT License