Python High order function samples

high_order_functions_samples.py

# Composistion
def f(x):
    return x + 2

def g(h, x):
    return h(x) * 2

print(g(f, 42))


# Closure
def addx(x):
    def _(y):
        return x + y
    return _

add2 = addx(2)
add3 = addx(3)

print(add2(2), add3(3))


# Currying
def a(x, y):
    return x*y

def f2(x):
    def _(y):
        return (a(x, y))

    return _

print(f2(2))
print(f2(2)(3))