With the techniques we have seen so far, we are now able to implement some useful domain-specific languages. In this chapter, we examine a toy example, lambda expressions. It is perhaps not something we would use in real-world code, as it simply gives an alternative syntax to anonymous functions, which are already supported in R. However, it is an excellent example of code that is potentially useful and gives us a chance to experiment with syntax.
We will use the rlang package.
Lambda expressions are Anonymous functions, in other ...