Hands-On Design Patterns and Best Practices with Julia

Interpolating variables in expressions

It is quite simple to construct expressions from a quote block. But what if we want to dynamically create expressions? This can be done using interpolation, which allows us to insert variable values into the expression object with an easy syntax. Interpolation in an expression is very similar to the way that variables can be interpolated in a string. The following screenshot shows an example:

As expected, the value of 2 is correctly substituted in the expression. Note that splatting is also supported, as shown below:

We must make sure that the variable that includes the splatting operator is interpolated ...