My favorite Ruby Enumerable methods

[joshmfrankel]

How it works When to use it Example

tally

• https://ruby-doc.org/core-3.0.2/Enumerable.html#method-i-tally

partition

• https://ruby-doc.org/core-3.0.2/Enumerable.html#method-i-partition

group_by

• https://ruby-doc.org/core-3.0.2/Enumerable.html#method-i-group_by

detect

• https://ruby-doc.org/core-3.0.2/Enumerable.html#method-i-detect

max_by

• https://ruby-doc.org/core-3.0.2/Enumerable.html#method-i-max_by

zip

• https://ruby-doc.org/core-3.0.2/Enumerable.html#method-i-zip

all?, any?, one?, none?

• https://ruby-doc.org/core-3.0.2/Enumerable.html#method-i-all-3F
• https://ruby-doc.org/core-3.0.2/Enumerable.html#method-i-any-3F
• https://ruby-doc.org/core-3.0.2/Enumerable.html#method-i-none-3F
• https://ruby-doc.org/core-3.0.2/Enumerable.html#method-i-one-3F

inject

• https://ruby-doc.org/core-3.0.2/Enumerable.html#method-i-inject