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20 lines
417 B
Markdown
20 lines
417 B
Markdown
# Assoc For Hashes
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Ruby's Hash class comes with a method, `assoc`, which is good for grabbing
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both the key and value from a hash. If the given key matches it returns a
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two element array with the key and value.
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```ruby
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> stuff = {a: 1, b: 2, c: 3}
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=> {a: 1, b: 2, c: 3}
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> stuff.assoc(:c)
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=> [:c, 3]
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```
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If a key is used that doesn't exist in the hash, then it simply returns nil.
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```ruby
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> {}.assoc(:c)
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=> nil
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```
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