函数式编程

python版本

def add(x,y,f):

return f(x)+f(y)

def f(s):

return 100

print add(2,3,f)

print '---'*10

l = [1,2,3,4,100,5]

def mapFunction(x):

return x*x

r = map(mapFunction,l)

print list(map(str,l))

print '---'*10

def plus(x,y):

return x + y

print reduce(plus,l)

print filter(lambda x: x % 2 == 0, l)

print sorted(l)

print list(map(lambda x: x * x, [1, 2, 3, 4, 5, 6, 7, 8, 9]))

js版本

arr = [1,3,2,4,5];

function pow (x) {

// body...

return x*x;

}

arr.map(pow)

arr.map(Sting)

arr.reduce(function  (x,y) {

// body...

return x * y;

});

arr.filter(function (x) {

return x % 2 !== 0;

});

arr.sort();