Partial Application
===================
```Example from 1 languages: JavaScript
const addNumbers = (num1, num2) => num1 + num2
const add5 = num => addNumbers(10, num)
```
```Example from 1 languages: C++
// http://www.cplusplus.com/reference/functional/bind/
// bind example
#include <iostream> // std::cout
#include <functional> // std::bind
// a function: (also works with function object: std::divides<double> my_divide;)
double my_divide (double x, double y) {return x/y;}
struct MyPair {
double a,b;
double multiply() {return a*b;}
};
int main () {
using namespace std::placeholders; // adds visibility of _1, _2, _3,...
// binding functions:
auto fn_five = std::bind (my_divide,10,2); // returns 10/2
std::cout << fn_five() << '\n'; // 5
auto fn_half = std::bind (my_divide,_1,2); // returns x/2
std::cout << fn_half(10) << '\n'; // 5
auto fn_invert = std::bind (my_divide,_2,_1); // returns y/x
std::cout << fn_invert(10,2) << '\n'; // 0.2
auto fn_rounding = std::bind<int> (my_divide,_1,_2); // returns int(x/y)
std::cout << fn_rounding(10,3) << '\n'; // 3
MyPair ten_two {10,2};
// binding members:
auto bound_member_fn = std::bind (&MyPair::multiply,_1); // returns x.multiply()
std::cout << bound_member_fn(ten_two) << '\n'; // 20
auto bound_member_data = std::bind (&MyPair::a,ten_two); // returns ten_two.a
std::cout << bound_member_data() << '\n'; // 10
return 0;
}
```
```Example from 1 languages: Scala
def add(x: Int, y: Int) = {x+y}; add(1, _: Int)
```
```Example from 1 languages: Clojure
(defn fun-full [x y] (+ x y))
(fun-full 2 3)
(def fun-half (partial fun-full 2))
(fun-half 3)
```
```Example from 1 languages: Speedie
main
"hello world ${app.args[0]}"
```
*
Languages *with* Partial Application include JavaScript, C++, Scala, Clojure, Speedie
*
View all concepts with or missing a *hasPartialApplication* measurement
http://pldb.info/../lists/explorer.html#columns=rank~id~appeared~tags~creators~hasPartialApplication&searchBuilder=%7B%22criteria%22%3A%5B%7B%22condition%22%3A%22null%22%2C%22data%22%3A%22hasPartialApplication%22%2C%22origData%22%3A%22hasPartialApplication%22%2C%22type%22%3A%22num%22%2C%22value%22%3A%5B%5D%7D%5D%2C%22logic%22%3A%22AND%22%7D missing
http://pldb.info/../lists/explorer.html#columns=rank~id~appeared~tags~creators~hasPartialApplication&searchBuilder=%7B%22criteria%22%3A%5B%7B%22condition%22%3A%22!null%22%2C%22data%22%3A%22hasPartialApplication%22%2C%22origData%22%3A%22hasPartialApplication%22%2C%22type%22%3A%22num%22%2C%22value%22%3A%5B%5D%7D%5D%2C%22logic%22%3A%22AND%22%7D with
*
Read more about Partial Application on the web: 1.
https://en.wikipedia.org/wiki/Partial_application 1.
Built with Scroll v178.2.3