object | 易学教程

php: efficiently running functions with one-time loaded classes multiple times in optional files

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问题 after reading the responses I have rewritten my question. Let's say I have a theoretical php application that uses objects that do different things. For every page that gets loaded by the application, different scripts will be run. now I made a simple php script that creates a simple object. (this is all made up, I'm just trying to understand this before I code it) $user = new userClass($db); $user->login($credentials); all is fine, and I can even repeat the procedure several times after

How to store information about many people in Java

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问题 My problem is to store details of people in Java. I looked up at the Oracle website topic How to Use Tables and found out that one can use object arrays(2 dimensional) to store details. But my interest is to make a dynamic object array so I can store any amount of data and also take input to store those details from the user. For instance, at the beginning of the program I can specify an object array to hold 5 records, but I actually want an array that could add another available location if

How to store information about many people in Java

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Titanium How to add 2 merge two Ti.Media.sound objects?

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问题 //Assuming cricket.wav file has audio information of 5 secs. var file1 = Titanium.Filesystem.getFile(Titanium.Filesystem.resourcesDirectory,'cricket.wav'); //Assuming mahamed.wav file has audio information of 25 secs. var file2 = Titanium.Filesystem.getFile(Titanium.Filesystem.resourcesDirectory,'test.wav'); //How do i merge both file1 and file2 and create a file which should have audio information of 30 secs.? var file = file1 + file2; // This is giving me an error. I need file which will

Verifying two different build architectures (one a re-write of the other) are functionally equivalent

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问题 I'm re-writing a build that produces a number of things (shared/static libraries, jars, executables, etc). The question came up whether there's a way to verify that the results are functionally equivalent without doing a full top-to-bottom test of the resulting software. However, that is proving to be more difficult to do than I anticipated. As an example, I expected that the md5 of two objects produced from the same source (sun studio C++ compiler) and command-line parameters would have the

sysobjects.Xtype

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SQL Server 数据库的一切信息都保存在它的系统表格里。在大多数情况下，对你最有用的两个列是Sysobjects.name和Sysobjects.xtype。前面一个用来列出待考察对象的名字，而后一个用来定义对象的类型 sysobjects 在数据库内创建的每个对象（约束、默认值、日志、规则、存储过程等）在表中占一行。只有在 tempdb 内，每个临时对象才在该表中占一行。列名数据类型描述 name sysname 对象名。 Id int 对象标识号。 xtype char(2) 对象类型。可以是下列对象类型中的一种： C = CHECK 约束 D = 默认值或 DEFAULT 约束 F = FOREIGN KEY 约束 L = 日志 FN = 标量函数 IF = 内嵌表函数 P = 存储过程 PK = PRIMARY KEY 约束（类型是 K） RF = 复制筛选存储过程 S = 系统表 TF = 表函数 TR = 触发器 U = 用户表 UQ = UNIQUE 约束（类型是 K） V = 视图 X = 扩展存储过程 uid smallint 所有者对象的用户 ID。 info smallint 保留。仅限内部使用。 status int 保留。仅限内部使用。 base_schema_ ver int 保留。仅限内部使用。 replinfo int 保留。供复制使用

How to show/hide parts of an object after in Vue

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问题 I am creating a features page for a product. When you click the feature name, it should expand a box below and provide a description. I took a small snippet of my data which is basically structured like this: { "Section": { "Page1": { "FeatureName": "Feature desc", "FeatureName": "Feature desc" }, "Page2": { "FeatureName": "Feature desc", "FeatureName": "Feature desc" } } } I have figured out a few ways to do this, but personally don't think any of them are great approaches. Looping through

Javascript add properties with the same name to an object

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问题 var elements = document.getElementsByClassName("someClass"); var obj = {}; for (var i = 0; i < elements.length; i++){ obj.userId = elements[i].id } // output: obj = {userId: 1, userId: 2, userId: 3.....etc} Is it possible in some way? Thanks. 回答1: keys in Object must be unique, you can try use Array , like this var obj = []; var data = {}; for (var i = 0; i < elements.length; i++) { data = { userId: elements[i].id }; obj.push(data); } // [ {userId: 1}, {userId: 2} ... ] 回答2: The JSON RFC says

Lodash一个一致性、模块化、高性能的 JavaScript 实用工具库

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Lodash一个一致性、模块化、高性能的 JavaScript 实用工具库。 difference() Lodash中文文档 npm lodash-es Vue项目引入 npm i lodash - es import { cloneDeep , mergeWith , throttle , debounce , tail , set , get , transform , isEqual , isObject , pick , groupBy , camelCase } from 'lodash-es' export { cloneDeep , mergeWith , throttle , debounce , set , get , transform , isEqual , isObject , pick , groupBy , camelCase , } // mergeWith(object, sources, customizer) 它接受一个 customizer，调用以产生目标对象和来源对象属性的合并值。如果customizer 返回 undefined，将会由合并处理方法代替。 customizer调用与7个参数：(objValue, srcValue, key, object, source, stack)。这方法会改变对象 object. // tail

Access object inside an array - Javascript

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问题 This is how my response body looks like. Its stored in a variable and when i use console.log(body) I get the following. [ { "key1":"value1", "key2":"value2", "key3":"value3" } ] Im trying to access "key3" using the following console.log(body[0].key3) I get undefined. Im not sure what is wrong here. If i just do console.log(body[0]) im getting a string [ Thanks for your help here. 回答1: The Problem Explained Your JS is looking at the property on a specific character: Take a look at the