String Interpolation With Quoted Strings Stapling strings together with the `++` operator can be tedious and clunky. If you have string variables that you'd like to interpolate, you can piece them together much more easily using [quoted strings]( We can get close to a solution with the standard quoted string syntax. ```reason let greeting = (greetee) => { {|Hello, $(greetee)!|} }; Js.log(greeting("World")); // => "Hello, $(greetee)!" ``` This isn't quite right though. We have to take advantage of a preprocessing hook provided by [Bucklescript]( The `j` hook supports unicode and allows variable interpolation. ```reason let greeting = (greetee) => { {j|Hello, $(greetee)!|j} }; Js.log(greeting("World")); // => "Hello, World!" ``` To use this pre-processor we have to include `j` in the quoted string like so `{j|...|j}`. See a [live example here]( harsha March 18, 2018