require | 易学教程

How do I get code completion for Node.js in Eclipse?

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问题 When developing a Node.js application in Eclipse , you usually import your own modules with functionality tied to exports (append functions) or module.exports (allows popular object literal notation). But how do you set this up for code completion in files where you import your module? Module As you can see in the outliner , Eclipse is "aware" of the function: Yet importing the module as tools doesn't make it's functions available: I also tried the oldskool //@import tools.js but it doesn't

Windows版本通过composer来下载安装laravel框架

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laravel是php的一个web框架。laravel框架安装主要依赖composer工具，本经验就介绍一下怎么在windows上安装laravel框架。 1，我本地使用的是phpstudy集成环境 2，php.ini中看一下extension=php_openssl.dll需要打开 3，安装composer 环境变量 4，安装laravel项目 composer global require"laravel/installer" 镜像国外的原因安装特别慢，很难成功，并不是出问题了啊，只是卡住了改成国内 composer config -g repo.packagist composer https://packagist.phpcomposer.com composer create-project --prefer-dist laravel/laravel blog laravel/laravel：包名，表示创建一个laravel项目 blog：项目目录 --prefer-dist：使用压缩版在php中使用composer install时，执行完命令，然后就一直停留在 Updating dependencies (including require-dev) 这里了，是网络的问题，只需要一直等待就行了，千万不要关闭了。浏览器打开网站 openssl没有开启去php

What does $:<< “.” do to Ruby's require path?

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问题 I don't understand the meaning of $:<< "." in Ruby. I upgraded Ruby to 1.9.1, but a program was not working. My classmate told me that I am supposed to add $:<< "." What does $:<< "." do? 回答1: $: is the variable that holds an array of paths that make up your Ruby's load path << appends an item to the end of the array . refers to the current directory 1 2 3 | | | V V V $: << "." So you are adding the current directory to Ruby's load path References: Can be found in the Execution Environment

【转】前端常见跨域解决方案（全）

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原文地址： https://segmentfault.com/a/1190000012469713 什么是跨域？跨域是指一个域下的文档或脚本试图去请求另一个域下的资源，这里跨域是广义的。广义的跨域： 1.) 资源跳转： A链接、重定向、表单提交 2.) 资源嵌入： <link>、<script>、<img>、<frame>等dom标签，还有样式中background:url()、@font-face()等文件外链 3.) 脚本请求： js发起的ajax请求、dom和js对象的跨域操作等其实我们通常所说的跨域是狭义的，是由浏览器同源策略限制的一类请求场景。什么是同源策略？同源策略/SOP（Same origin policy）是一种约定，由Netscape公司1995年引入浏览器，它是浏览器最核心也最基本的安全功能，如果缺少了同源策略，浏览器很容易受到XSS、CSFR等攻击。所谓同源是指"协议+域名+端口"三者相同，即便两个不同的域名指向同一个ip地址，也非同源。同源策略限制以下几种行为： 1.) Cookie、LocalStorage 和 IndexDB 无法读取 2.) DOM 和 Js对象无法获得 3.) AJAX 请求不能发送常见跨域场景 URL 说明是否允许通信 http://www.domain.com/a.js http://www.domain.com

Ruby require 'file' doesn't work but require './file' does. Why?

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问题 I have a folder full of ruby files, and when I try and require one file in another that is in the same directory using require 'file' I get a LoadError but when I use require './file' everything works fine. Can somebody explain to me why this happens and if there is any way I can require a file without adding a ./ onto the file? (Picture of directory): 回答1: If you want to require a file not from the system $LOAD_PATH but rather relative to the directory of the file you are require ing from ,

Whats the impact of requiring a package inside a function if the package is already loaded?

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问题 Are there any adverse effect to including library / require statements inside of functions that will be called very frequently? The time used seems rather negligble, but I am calling the function every few minutes and I am wondering if there is any downside to the repetitve require calls? note that the function is just a personal util and is not being shared. ie, I am the only one using it Incidentally, any insight as to why library is half as slow as require ? I was under the impression they

Node.js实战3：加载一组模块。

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有时候，希望通过一个require来加载一个目录下的相关文件。注：这个方法通常被用来作为组织 web应用的架构技巧。为达到这个目的，需要如此操作：例：建立一个目录，在此目录中创建一个index.js文件。 index.js内容如下：这个模块，用于组合one.js和two.js两个子模块，将他们合并一起做输出。那么，one.js、two.js是需要存在的，他们的内容如下：这时，只要require group目录，便可调用到one.js和two.js：执行，会是什么样的输出呢？没错，就是这样：以此类推，还可以使用更多的group目录下的文件、更多的接口，实现不同的功能。参考资料：来源： https://www.cnblogs.com/w2sft/p/12008920.html

加载自定义类库

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index.php require(__DIR__ . '/../vendor/autoload.php'); require(__DIR__ . '/../vendor/yiisoft/yii2/Yii.php'); Yii::$classMap['LibImage'] = __DIR__ . '/../libs/LibImage.php'; $config = require(__DIR__ . '/../config/web.php'); (new yii\web\Application($config))->run(); call $img = new \LibImage(); 来源： CSDN 作者：强哥83 链接： https://blog.csdn.net/hzqghost/article/details/44257617

Making an executable from ruby files using Ocra, LoadError?

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I'm trying to make an executable from a couple ruby files on Windows, so I installed Ocra. I thought I understood the process of how Ocra works, but can't seem to get the executable working correctly. The problem I am having arises with "requiring" other ruby files. The ruby program by itself compiles correctly and functions how I want it to, and Ocra seems to create a working executable, however, when I attempt to run the executable, I get the following error: */custom_require.rb:36:in 'require': cannot load such file -- MainMenuDialog.rb (LoadError)* My main program is called 'JobManager.rb'

Porting Chrome extension using jQuery to Firefox SDK Add-on

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My Chrome extension makes use of jQuery in the background page, for things like jQuery.extend() , jQuery.ajax() , jQuery.deferred() , (not DOM manipulation stuff, which doesn't make sense in a background page). Migrating this code to a Firefox SDK Add-on , there's no background window object, which jQuery requires to work, so something like var $ = require('../3rdparty/jquery.min')(window); which is how jQuery works in a CommonJS-like environment, fails, with jQuery itself throwing a jQuery requires a window with a document exception. Is there any way to use jQuery in a Firefox SDK-based add