View source code
Display the source code in std/functional.d from which this page was generated on
github.
Improve this page
Quickly fork, edit online, and submit a pull request for this page.
Requires a signed-in GitHub account. This works well for small changes.
If you'd like to make larger changes you may want to consider using
local clone.
Page wiki
View or edit the community-maintained wiki page associated with this page.
Template std.functional.compose
Composes passed-in functions fun[0], fun[1], ... returning a
function f(x) that in turn returns fun[0](fun[1](...(x))).... Each function can be a regular
functions, a delegate, or a string.
Arguments
template compose(fun...);
Example
// First split a string in whitespace-separated tokens and then
// convert each token into an integer
assert(compose!(map!(to!(int)), split)("1 2 3") == [1, 2, 3]);