Created
January 19, 2014 16:54
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Ruby method that checks whether a number is evenly divisible by three or not. The function uses Ruby's ternary operator, which is a shorthand for the if-else control structure. It's a best pratice to end method names with a question mark when they return boolean values (true || false).
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| def by_three? number | |
| number % 3 == 0 ? true : false | |
| end | |
| by_three? 5 | |
| # => false | |
| by_three? 9 | |
| # => true |
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number % 3 == 0is fine and returns true or false. Why use a ternary at all?