Ruby 2.7 adds UnboundMethod#bind_call methodRuby 2.7 has added bind_call method to UnboundMethods to avoid the allocation from intermediate Method object
Ruby 2.7 deprecates automatic conversion from a hash to keyword argumentsRuby 2.7 deprecates automatic conversion from a hash to keyword arguments in preparation for real keyword arguments in Ruby 3.0
Ruby 2.7 adds Enumerator::Lazy#eagerRuby 2.7 added `eager` method to the Enumerator::Lazy class
Ruby 2.7 adds Integer# to support range valuesRuby 2.7 has extended `Integer#` to support range arguments which makes expressions cleaner and more readable
Ruby 2.7 adds Module#const_source_locationRuby 2.7 has added Module#const_source_location to get the source location of a constant
Ruby 2.7 adds warning for Proc.new and proc without block and error for lambda without blockIn Ruby 2.7 Proc.new and proc with no block in a method called with a block is warned now and lambda with no block in a method called with a block will give errors.
Ruby 2.7 adds FrozenError#receiverRuby 2.7 has added `FrozenError#receiver` to return the frozen object on which modification was attempted
Ruby 2.7 adds Time#ceil and Time#floor methodsRuby 2.7 adds Time#ceil and Time#floor methods to round up and down the decimal part of Time (nanosecond) to the specified digit
Ruby 2.7 adds beginless rangeA beginless range is experimentally introduced in ruby 2.7.
Ruby 2.7 adds Enumerable#filter_mapRuby 2.7 has added Enumerable#filter_map as a shorthand for filter + map in a single call