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Ruby conditional assignment

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Join Stack Overflow to learn, share knowledge, and build your career. Connect and share knowledge within a single location that is structured and easy to search. It is the ternary operator , and it works like in C the parenthesis are not required. It's an expression that works like:. Both are expressions.
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What Is the Ternary or Conditional Operator in Ruby?

The ternary or conditional operator will evaluate an expression and return one value if it's true, and another value if it's false. It's a bit like a shorthand, compact if statement. Ruby's ternary operator has its uses but it's also a bit controversial. Let's look at this example:. Here, the conditional operator is being used to select between two strings. The entire operator expression is everything including the conditional, question mark, two strings, and the colon. The general format of this expression is as follows: conditional?
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How to Use The Ruby Ternary Operator (?:)

That is, if the left hand side of the comparison is true, there's no need to check the right hand side. They're entirely different ideas and are implemented entirely different[ly]. As mentioned earlier, this is entirely due to a and b both being local variables. Once it becomes logically truthful i.
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Ruby is heavily influenced by lisp. One piece of obvious inspiration in its design is that conditional operators return values. This makes assignment based on conditions quite clean and simple to read. There are quite a number of conditional operators you can use.
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