Interpolation to transfer user input code

Question

I was wondering if there was a way to setup a string with interpolation to have the code in the string run multiple times. (I know I could just put the code in a loop, but for the sake of wondering).

For example, I would like the following code:

x = "#{puts 'a'}"

3.times do
   x
end

To have the output:

a
a
a

This issue I've found is that interpolation is resolved upon initialization. But is there a way to setup a string so that the interpolation can be reused?

justapilgrim · Accepted Answer · 2018-02-17 20:43:23Z

1

String interpolations are not made for this purpose. Strings are supposed to express semantics, not behaviours. Don't call puts inside an interpolated string.

You can still do something like:

def x
  puts 'a'
end

3.times do
  x
end

edited Feb 17, 2018 at 20:43

answered Feb 17, 2018 at 20:38

justapilgrim

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