Enum

Provide more information on Enum.OutOfBoundsError

Allow slicing with steps in Enum.slice/2

Optimize Enum.concat/1 for lists of lists

Add Enum.slide/3

Optimize Enum.into/3 and Map.new/2

Add Enum.count_until/2 and Enum.count_until/3

Add Enum.product/1

Add Enum.zip_with/2, Enum.zip_with/3, Enum.zip_reduce/3, and Enum.zip_reduce/4

Add support for functions as the second argument of Enum.with_index/2

Allow a sorting function on Enum.min_max_by/3,4, including the new compare/2 conventions

Speed up getting one random element from enumerables

Add Enum.frequencies/1, Enum.frequencies_by/2, and Enum.map_intersperse/2

Allow a sorting function on Enum.min/max/min_by/max_by

Add asc/desc and compare/1 support to Enum.sort/2

Passing a non-empty list to Enum.into/2 was inconsistent with maps and is deprecated in favor of Kernel.++/2 or Keyword.merge/2

Enum.chunk/2/3/4 is deprecated in favor of Enum.chunk_every/2/3/4 - notice chunk_every does not discard incomplete chunks by default

Enum.partition/2 is deprecated in favor of Enum.split_with/2

Add Enum.chunk_by/4 and Stream.chunk_by/4

Add Enum.chunk_every/2 and Enum.chunk_every/4 with a more explicit API than Enum.chunk/2 and Enum.chunk/4

Deprecate Enum.filter_map/3 in favor of Enum.filter/2 + Enum.map/2 or for-comprehensions

Add Enum.map_every/2 that invokes the given function with every nth item

Add min/2, max/2, min_max/2, min_by/3, max_by/3, and min_max_by/3 that allow a function specifying the default value when the enumerable is empty

Introduce Enum.zip/1 to zip multiple entries at once

Enum.partition/2 has been deprecated in favor of Enum.split_with/2

Deprecate Enum.uniq/2 in favor of Enum.uniq_by/2

Add Enum.group_by/3 that allows developers to map on the value being grouped

Make list values in maps returned by Enum.group_by/2 and Enum.group_by/3 preserve the order of the input enumerable instead of reversing it.

Add Enum.drop_every/2 that drops every nth, including the first one

Passing a dictionary to Enum.group_by/3 is deprecated

Use the faster and auto-seeding :rand instead of :random in Enum.shuffle/1 and Enum.random/1 and Enum.take_random/2

Add Enum.with_index/2

Fix non-integer member checks with ranges

Add Enum.random/1, Enum.take_random/2, Enum.min_max/1, Enum.min_max_by/2, Enum.reverse_slice/3, Enum.reduce_while/3, Enum.dedup/1 and Enum.dedup_by/2

Inline common map usage in Enum functions for performance

Enum.uniq/2 is deprecated in favor of Enum.uniq_by/2

Ensure Enum.take/2 does not consume one extra item when halting on the last emittable item

Add Enum.sort_by/3

Improve performance of Enum.join/2 and Enum.map_join/3 by using iolists

Enum.slice/2 and Enum.slice/3 always returns a list (and never nil)

Fix Enum.join/2 and Enum.map_join/3 for empty binaries at the beginning of the collection

Add Enum.group_by/2, Enum.into/2, Enum.into/3, Enum.traverse/2 and Enum.sum/2

Add Enum.flat_map_reduce/3

Deprecate Enum.first/1 in favor of Enum.at/2 and List.first/1

Fix bug in Enum.chunk/4 where you'd get an extra element when the enumerable was a multiple of the counter and a pad was given

Enumerable.count/1 and Enumerable.member?/2 should now return tagged tuples. Please see Enumerable docs for more info

Deprecate Enum.chunks/2, Enum.chunks/4 and Enum.chunks_by/2 in favor of Enum.chunk/2, Enum.chunk/4 and Enum.chunk_by/2

Behaviour of Enum.drop/2 and Enum.take/2 has been switched when given negative counts

Behaviour of Enum.zip/2 has been changed to stop as soon as the first enumerable finishes

Enumerable.reduce/3 protocol has changed to support suspension. Please see Enumerable docs for more info

Add Enum.slice/2 with a range

Document and enforce Enum.member?/2 to use the match operator (===)

Add Enum.take_every/2

Add Enum.split/2, Enum.reduce/2, Enum.flat_map/2, Enum.chunks/2, Enum.chunks/4, Enum.chunks_by/2, Enum.concat/1 and Enum.concat/2

Support negative indices in Enum.at/fetch/fetch!

Enum.min/2 and Enum.max/2 are deprecated in favor of Enum.min_by/2 and Enum.max_by/2

Enum.join/2 and Enum.map_join/3 with a char list are deprecated

Add Enum.shuffle/1

Receiving the index of iteration in Enum.map/2 and Enum.each/2 is deprecated in favor of Stream.with_index/1