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24 lines
541 B
Markdown
24 lines
541 B
Markdown
# Are They All True?
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There is a method on `Enumerable` that allows you to check against
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everything in a collection. This is the `all?` method.
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For instance, if you want to check if an array of values are all
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truthy, you can call it without arguments:
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```ruby
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> [true, 1, ''].all?
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# true
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> [true, false, true].all?
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# false
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```
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You can also pass it a block which is helpful if you want to check an
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attribute or method on a collection of objects, like so:
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```ruby
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> employees.all?(&:salaried?)
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# true
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> [1,2,3,4,5].all?(&:odd?)
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# false
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```
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