What's Changed

• Implement Fear::Either#left by @bolshakov in #169

Left projection allows performing right-biased operation of the left side of the Fear::Either:

Fear.left(42).left.map(&:succ)  #=> Fear.left(43)
Fear.right(42).left.map(&:succ) #=> Fear.left(42)

Before implementing left projection, the same operation was possible to achieve with double swapping:

Fear.left(42).swap.map(&:succ).swap  #=> Fear.left(43)
Fear.right(42).swap.map(&:succ).swap #=> Fear.left(42)

• Add an alias #apply to the #each method by @ngrebenshikov in #164

Fear.option(42).apply { puts "The answer is #{_1}" }

the above code is the same as the following:

Fear.option(42).each { puts "The answer is #{_1}" }

• Code cleanup by @bolshakov in #171
  • Remove development dependencies from the gem-spec
  • Reorganised files structure
• Test against ruby >= 3.1.0 by @bolshakov in #170
• Use zeitwerk to load fear files by @bolshakov in #172

Breaking Changes

• Extract Dry::Types integration into a separate gem by @bolshakov in #173

To use Fear::Option as optional type for Dry::Types use the dry-types-fear gem.

• Drop Fear::Struct by @bolshakov in #174

Consider using Data from the standard library.

New Contributors

• @ngrebenshikov made their first contribution in #164

Full Changelog: v2.0.1...v3.0.0