noircc
Reputation: 640
Can i check if an array e.g. just holds integers in ruby?
Title, i think is self declaring. I am kind of a java-developer and wanna ensure that my array holds just integer values. I know everything in ruby is a object. I find it inconvenient to loop through the array and make checks at every element. Is there any shortcut to this in ruby?
Upvotes: 9
Views: 10420
Answers (1)
Sergio Tulentsev
Reputation: 230346
Use Enumerable#all? with a block. Integer numbers are instances of class Integer in ruby.
[1, 2, 3].all? {|i| i.is_a?(Integer) } # => true
[1, 2, 3, '4'].all? {|i| i.is_a?(Integer) } # => false
Upvotes: 23
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