dry-python/returns 0.2.0

Version 0.2.0

on GitHub

Features

• Adds Maybe monad
• Adds immutability and __slots__ to all monads
• Adds methods to work with failures
• Adds safe decorator to convert exceptions to Either monad
• Adds is_successful() function to detect if your result is a success
• Adds failure() method to unwrap values from failed monads

Bugfixes

• Changes the type of .bind method for Success monad
• Changes how equality works, so now Failure(1) != Success(1)
• Changes how new instances created on unused methods

Misc

• Improves docs