The hash function has to be used every time we create, read, update, or delete data. Therefore, the hash function should be fast, and moreover, it should not be connected to the existing data length. That is, O(1). 3. It Should Be Uniform Distributed Suppose there is an array of ...
再回到 ES6 标准文档,经过一番搜索和查找,关注点锁定在了 ECMA-262 6.1.7 The Object Type 提到的integer index这一概念: Aninteger indexis a String-valued property key that is a canonical numeric String (see 7.1.16) and whose numeric value is either +0 or a positive integer ≤ 2^53−1. ...
<script> // use the global esriConfig variable to initialize properties var esriConfig = { portalUrl: "https://myHostName.esri.com/arcgis" }; </script> Property Overview NameTypeSummaryObject apiKey String|null|undefined An authorization string used to access a resource or service. config app...
This is a shortcut to setting the interface; // any other options must be passed via an object. mocha.setup('tdd'); // This is equivalent to the above. mocha.setup({ ui: 'tdd' }); // Use "tdd" interface, check global leaks, and force all tests to be asynchronous mocha.setup(...
In javascript, hashisa group of name/value pairswhere aunique name points to a unique value, and are includedwithin a brace. 1varhash ={2vari01 : "OK",3vari02 : "KO"4};5console.log("Out put key/value:");6for(iinhash){7console.log(hash[i]);8}910Out put key/value:11OK12KO...
catalogOptions Object |null |undefined Since: ArcGIS Maps SDK for JavaScript 4.30 CatalogLayer specific properties. Catalog layers will display their dynamicGroupLayer as an expandable catalogLayerList in the LayerList widget. This list item will only be displayed when catalog layers with dynamic ...
RequestItems: { Books: { // Each entry in Keys is an object that specifies a primary key. Keys: [ { Title: "How to AWS", }, { Title: "DynamoDB for DBAs", }, ], // Only return the "Title" and "PageCount" attributes. ProjectionExpression: "Title, PageCount", ...
An Observable object is designed to model a lazy, unidirectional, push-based data source (such as streams). Observable 暂时没有 JS 的原生实现, 一般通过 RxJS 或者core-js 进行使用, 它具有一些特性: Unidirectional Data Flow(Data Propagation): 数据流一定是从 Publisher 到 Subscriber . Declarative...
According to the JSON standard, for example, the name of an object member must be a valid JSON string. A string in JSON must be enclosed in quotation marks. JavaScript, on the other hand, allows object member names to be delimited by quotation marks or apostrophes or to omit quoting ...
pageTags Object Null 页标记。 dataTags ICustomDataTags Null 提供的自定义数据标记用于替代捕获单击数据的默认标记。 urlCollectHash 布尔 False 启用URL中“#”字符后的值的日志记录。 urlCollectQuery 布尔 False 启用URL 查询字符串的日志记录。 behaviorValidator 功能 Null 用于验证 data-*-bhvr 值的回调函数...