This document discusses the Enumerable module in Ruby. It is included in classes like Array and Hash, providing common iteration methods like each, map, find, select, reject, and more. These methods work on any class that includes Enumerable by defining a each method that yields elements. The document gives an overview of Enumerable and examples of common Enumerable methods like each, map, find, select, partition, zip, min/max and others. It encourages readers to learn more about how to include Enumerable in their own classes and discusses other topics that will be covered in future parts such as Arrays, Hashes and Sets.

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2. Ruby Cold Cuts
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3. Ruby Cold Cuts
A Slice of Ruby Core & The Standard Library:
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4. Ruby Cold Cuts
A Slice of Ruby Core & The Standard Library:
Enumerating Enumerable
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5. Ruby Cold Cuts
A Slice of Ruby Core & The Standard Library:
Part I
Enumerating Enumerable
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9. • Dynamically Typed
• Interpreted
• “Pure”- Object Oriented
• Multi paradigm
• Memory Managed
• Geared for “developer happiness and productivity”
Ruby
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12. Enumerable
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20. module Enumerable
class Enumerator
!=
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21. Modules
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25. Enumerable
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26. Use Enumerable
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27. Where to find Enumerable methods?
http://ruby-doc.org/core-2.0/Enumerable.html
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28. What do we get with Enumerable?
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29. What do we get with Enumerable?
• all?
• any?
• chunk
• collect
• collect_concat
• count
• cycle
• detect
• drop
• drop_while
• each_cons
• each_entry
• each_slice
• each_with_index
• each_with_object
• entries
• find
• find_all
• find_index
• first
• flat_map
• grep
• group_by
• include?
• inject
• map
• max
• max_by
• member?
• min
• min_by
• minmax
• minmax_by
• none?
• one?
• partition
• reduce
• reject
• reverse_each
• select
• slice_before
• sort
• sort_by
• take
• take_while
• to_a
• to_set
• zip
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30. #each
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31. #each_with_index
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32. #map | #collect
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33. #find | #detect
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34. #select | #reject
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35. #any? | #all? | #none? | #one?
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36. #partition
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37. #zip
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38. #min | #max | #minmax
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39. To Be Continued
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40. Next Week on...
• Create your own class that uses Enumerable
• Arrays
• Hashs
• Sets
• and More!
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