Think of an array such as int x[5][10]. Here x is a two dim. array. Indexing it just once such as x[i], you get another array, a vector of 10 ints, which can be

Think of an array such as int x[5][10]. Here x is a two dim. array. Indexing it just once such as x[i], you get another array, a vector of 10 ints, which can be indexed further. So in a sense x[i] is a "curried" array! In general given an N dim. array, indexing it K (less than N) times you get an array of N-K dimensions. Now you can think of an array as a restricted function whose domain is 0..n x ... and range is some type. The same concept of "currying" applies to functions. That is, given a function of N arguments, if you provide K (less than N) arguments you get another function of N-K arguments. It is strange that many programming languages allow currying of arrays but not of functions!