function compose(f, g) {
return function() {
return f(g.apply(this, arguments));
};
}
---
function compose(f,g) {
return function(...a) {
return f(g(...a));
}
}
---
var compose = (f,g) => (...args) => f(g(...args));
原文：http://www.cnblogs.com/superAng/p/5557107.html