dry-python/returns 0.8.0

Version 0.8.0

on GitHub

Features

• Reintroduces the Maybe monad, typed!
• Introduces converters from one type to another
• Adds mypy plugin to type decorators
• Complete rewrite of Result types
• Partial API change, now Success and Failure are not types, but functions
• New internal types introduced: FixableContainer and ValueUnwrapContainer

Bugfixes

• Fixes issue when you could return IO container from Result.bind
• Fixes @pipeline return type

Misc

• Reapplied all types to .py files
• Improved docs about IO and Container concept
• Adds docs about container composition
• Moves from Alpha to Beta