function sum(a) {
var currentSum = a;
function f(b) {
currentSum += b;
return f;
}
f.toString = function() {
return currentSum;
};
return f;
}
alert( sum(1)(2) ); // 3
alert( sum(5)(-1)(2) ); // 6
alert( sum(6)(-1)(-2)(-3) ); // 0
alert( sum(0)(1)(2)(3)(4)(5) ); // 15<?php
$foo = [
'alice' => 'bob',
'bar' => 'baz',
];
$bar = [
'john' => 'doe',
'foo' => 'baz',
];
var_dump(
array_intersect($foo, $bar),
array_intersect($bar, $foo)
);
// output:
array(1) {
'bar' =>
string(3) "baz"
}
array(1) {
'foo' =>
string(3) "baz"
}document.addEventListener('DOMContentLoaded', function() {
document.querySelector('img').onload = function() {
alert('ok');
};
});