Array.isArray(middleware)) throw new TypeError('Middleware stack must be an array!') for (const fn of middleware) { // 中间件必须为函数类型 if (typeof fn !== 'function') throw new TypeError('Middleware must be composed
function compose(middleware) { if (!Array.isArray(middleware)) throw new TypeError('Middleware stack must be an array!') for (const fn of middleware) { if (typeof fn !== 'function') throw new TypeError('Middleware must be composed of functions!') } return function (context, next) { ...
toArray(function(err, result) { //如果存在错误 if(err) { console.log('Error:'+ err); return; } //调用传入的回调方法,将操作结果返回 callback(result); }); } //使用客户端连接数据,并指定完成时的回调方法 MongoClient.connect(DB_CONN_STR, function(err, db) { console.log("连接成功!")...
则抛异常 if (!Array.isArray(middleware)) { throw new TypeError('Middleware stack must be an array!'); } for (const fn of middleware) { if (typeof fn !== 'function') { throw new TypeError('Middleware must be composed of functions!'); } } // 返回一个闭包函数 return function (con...
var largeStr = new Array(1000000).join(’x’); var lC = function lC() { // this IS a named function return largeStr; }; return lC; } 1. 2. 3. 4. 5. 6. 7. 8. 9. 例子:尝试这个例子 why eval is evil来分析内存中闭包的影响。你可能也对尝试下面这个例子,记录 heap allocations(...
that passing JS dates through the channel will convert them to strings and functions will be removed from their containing objects. In line withThe JSON Data Interchange Syntax Standard, the channel supports sending messages that are composed of these JS types:Boolean,Number,String,Object,Array. ...
[4252dc798c] - assert: support Float16Array in loose deep equality checks (Livia Medeiros) #57881 [1c7396b078] - assert,util: fix constructor lookup in deep equal comparison (Ruben Bridgewater) #57876 [1ded5f25c8] - assert,util: improve deep object comparison performance (Ruben Bridgewat...
创建functions.php在app/Helpers/(目录可以自己随便来)下新建一个文件 functions.php,在内部补充如下代码: <? php /** * 公用的方法返回json数据,进行信息的提示 * @param $status 状态 * @param string $message 提示信息 * @param array 测试在控制器的随意一个方法中执行下面代码,有数据输出则配置成功: sh...
Functions表示函数,类似关系数据库中的存储过程与函数。 Users表示用户。 document表示记录,类似关系数据为中的记录或行。 如果你想查看所有数据库,可以使用 show dbs 命令: > show dbs MongoDB 中默认的数据库为 test,如果你没有创建新的数据库,集合将存放在 test 数据库中。
Array of arguments for the node build make step default:[] vcBuild: string[] Options for windows build default:['nosign', 'release'] snapshot: string path to a file to be used as the warmup snapshot for the build default:null