The operation #{ } appears to be so fundamental that my Ruby book completely skips its definition. Can someone provide an explanation?
The operation #{ } appears to be so fundamental that my Ruby book completely
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The operation #{ } appears to be so fundamental that my Ruby book completely skips its definition. Can someone provide an explanation?
Why This Is a Good Question
This is a tough question to Google for unless you know the right search terms. The
#{}operator technically performs expression substitution inside a string literal.The Answer
The
#{}literal is the operator used for interpolation inside double-quoted strings the same way that the backticks or$()construct would be used in Bash. From a practical point of view, the expression inside the literal is evaluated, and then the entire#{}expression (including both the operator and the expression it contains) is replaced in situ with the result.Related Links