摘要:
一:有趣的例子 例子1:看如下代码: x = 1; alert(x); var y = function() { alert(x); var x = 2; alert(x); } y(); 对于我来说,第一反应它会输出:1,1,2,然而》》》》上面的代码实际输出:1,undefined,2 为什么第 阅读全文
摘要:
Redis is different than other database solutions in many ways: it uses memory as main storage support and disk only for persistence, the data model is 阅读全文