Use of indexing operators

opIndex, opIndexAssign, opIndexUnary, opIndexOpAssign, and opDollar make it possible to use indexing operators on user-defined types similar to arrays as in object[index].

Unlike arrays, these operators support multi-dimensional indexing as well. Multiple index values are specified as a comma-separated list inside the square brackets (e.g., object[index0, index1]). In the following examples, we will use these operators only with a single dimension and cover their multidimensional uses in the more ...