Apply a callback to an array: Difference between revisions

Content added Content deleted
(Added Clean example)
Line 232: Line 232:
for_each(ary.begin(), ary.end(), _1 = ++var(i)); // init array
for_each(ary.begin(), ary.end(), _1 = ++var(i)); // init array
transform(ary.begin(), ary.end(), ostream_iterator<int>(cout, " "), _1 * _1); // square and output
transform(ary.begin(), ary.end(), ostream_iterator<int>(cout, " "), _1 * _1); // square and output

==[[Clean]]==
[[Category:Clean]]

Define a function and an initial (unboxed) array.

square x = x * x
values :: {#Int}
values = {x \\ x <- [1 .. 10]}

One can easily define a map for arrays, which is overloaded and works for all kinds of arrays (lazy, strict, unboxed).

mapArray f array = {f x \\ x <-: array}

Apply the function to the initial array (using a comprehension) and print result.

Start :: {#Int}
Start = mapArray square values


== [[Common Lisp]] ==
== [[Common Lisp]] ==
Retrieved from "https://rosettacode.org/wiki/Apply_a_callback_to_an_array"