In the previous chapter, we worked on a program that built patterns of black and white tiles that corresponded to the elements of a square array. In this chapter, we will introduce a powerful syntax that allows us to build larger patterns from shorter programs.
3.1 Array Indexes
Recall from Chapter 2 that an array is a list of values. An array of arrays is effectively a grid, and our programs so far have used these to represent rectangular patterns of black and white tiles. In these programs, we have used the library ...
