underscore

Underscore template throwing variable not defined error

匿名 (未验证) 提交于 2019-12-03 01:25:01
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: I've watched some videos on the topic of backbone js. This is an example straight from the video. It is from 2012, so I'm thinking backbone rules/library have changed, but I can't figure out why this does not work at the moment. In the video, the person shows it running in the JS Fiddle, but I can't get it to work. (I've included the necessary libraries in JS Fiddle, i.e. underscore, backbone and jQuery) var V = Backbone.View.extend({ el:'body', render: function () { var data = { lat: -27, lon: 153 }; this.$el.html(_.template(' ', data));

Require.js Error: Load timeout for modules: backbone,jquerymobile

匿名 (未验证) 提交于 2019-12-03 01:05:01
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: I am trying to use r.js to optimize my code but I keep running to this error: Tracing dependencies for: init Error: Load timeout for modules: backbone,jquerymobile The command I am running is this: $ java -classpath /Users/dixond/build-tools/rhino1_7R4/js.jar:/Users/dixond/build-tools/closurecompiler/compiler.jar org.mozilla.javascript.tools.shell.Main /Users/dixond/build-tools/r.js/dist/r.js -o /Users/dixond/Sites/omm_mobile/js/build.js My build.js file looks like this: ( { //appDir: "some/path/", baseUrl : ".", mainConfigFile : 'init.js',

Underscore in rename command (Perl and Unix shell)

匿名 (未验证) 提交于 2019-12-03 01:03:01
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: I'm trying to replace all _ underscore character by - hyphen character in all file names .mat inside one folder. I type different versions unsuccessfully of: rename -f 'w/_/-' *.mat Can someone explain to me what is wrong? 回答1: If you're using a Perl-based rename (as your tags suggest) then w isn't a Perl regex operation. rename -f 's/_/-/g' *_*.mat 回答2: I cannot fathom whether you are using a shell rename or the Perl rename: I can't understand your command in either context. A Perl command-line script to rename all *.mat files in the

Don't split on underscore with solr.StandardTokenizerFactory

匿名 (未验证) 提交于 2019-12-03 00:56:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: I'm using solr, I'm using StandardTokenizerFactory in the text field but I don't want to split on the underscore. Do I have to use another toknizer like PatternTokenizerFactory or I can do this with StandardTokenizerFactory ? as I need the same functionality of StandardTokenizerFactory but without split on underscore. 回答1: I don't think you can do it in StandardTokenizerFactory. One solution is to first replace underscores with something the StandardTokenizerFactory won't process and something your documents won't otherwise contain. For

golang下划线(underscore) 总结

匿名 (未验证) 提交于 2019-12-02 23:32:01
一、概述 “_” 可以简单理解为赋值但以后不再使用,在golang中使用的比较多,使用的场合也很多,稍作总结; 二、场景 1、import 1 import _ "net/http/pprof" 引入包,会调用包中的初始化函数,这种使用方式仅让导入的包做初始化,而不适用包中其他功能; 2、用在返回值 1 for _, v := range Slice {} 2 _, err := func() 表示忽略某个值。单函数有多个返回值,用来获取某个特定的值 3、用在变量 1 type Interface interface { 2 3 } 4 5 type T struct{ 6 7 } 8 9 var _ Interface = &T{} 上面用来判断 type T是否实现了I,用作类型断言,如果T没有实现借口I,则编译错误. 示例: 1 package main 2 3 import "fmt" 4 5 type Interface interface { 6 Stop() 7 } 8 9 type Bmw struct { 10 Name string 11 } 12 13 func (this *Bmw) Stop() { 14 fmt.Printf("%s bmw stop.\n", this.Name) 15 } 16 17 type Car struct { 18

Webpack 4.X 从入门到精通 - 第三方库(六)

耗尽温柔 提交于 2019-12-02 14:12:45
在开发的时候会时常用到第三方的库或者框架,比如耳熟能详的 jquery 。借助它们能提高开发效率,但是如何在 webpack 中使用呢。这篇文章介绍两个东西,如何使用第三方库以及如何提取第三方库。 使用第三方库 1、在入口文件当中直接导入 安装jQuery npm i jquery -S 目录结构如图: package.json 内容如下: { "name": "webpack-demo", "version": "1.0.0", "description": "", "main": "webpack.config.js", "scripts": { "build": "webpack --mode production", "dev": "webpack-dev-server --mode development" }, "keywords": [], "author": "", "license": "ISC", "devDependencies": { "css-loader": "^1.0.0", "file-loader": "^1.1.11", "html-webpack-plugin": "^3.2.0", "mini-css-extract-plugin": "^0.4.1", "url-loader": "^1.0.1", "webpack": "^4.16.3"

前端js模块化编写require.js

随声附和 提交于 2019-11-30 12:28:16
requirejs是一个JavaScript文件和模块加载器。requireJS允许你把你的javascript代码独立成文件和模块,同时管理每个模块间的依赖关系。 RequireJS的目标是鼓励代码的模块化,它使用了不同于传统"script"标签的脚本加载步骤。使用RequireJS加载模块化脚本将提高代码的加载速度和质量。 一、为什么要用require.js? 最早的时候,所有Javascript代码都写在一个文件里面,只要加载这一个文件就够了。后来,代码越来越多,一个文件不够了,必须分成多个文件,依次加载。下面的网页代码,相信很多人都见过:   <script src="1.js"></script>   <script src="2.js"></script>   <script src="3.js"></script>   <script src="4.js"></script>   <script src="5.js"></script>   <script src="6.js"></script> 这段代码依次加载多个js文件。 这样的写法有很大的缺点。 首先,加载的时候,浏览器会停止网页渲染,加载文件越多,网页失去响应的时间就会越长 由于js文件之间存在依赖关系,因此必须严格保证加载顺序(比如上例的1.js要在2.js的前面),依赖性最大的模块一定要放到最后加载

读underscore

走远了吗. 提交于 2019-11-26 14:44:16
最近在拜读只有1700行(含注释)代码的Underscore.js 1.9.1,记录一些东西 (参考 https://underscorejs.org/underscore.js , https://github.com/hanzichi/underscore-analysis ) void 0替代了undefined;因为在低版本ie中undefined可以被重新赋值,或者在局部作用域中也可以被重新赋值;所以undefined显得不那么靠谱,于是就用void 0替代了undefined,void运算符对表达式求值都会返回undefined; 数据类型判断,先看原声方法支持与否,不支持再用Object.prototype.toString.call方法进行判断;不过在 IE < 9 下对 arguments 调用 Object.prototype.toString.call,结果是 [object Object],这时可以用arguments.callee是否存在来判断;dom元素判断方法为存在且nodeType为1; 如果在对象中重写了原型上的不可枚举属性,那么for in是可以取到这个属性的;但是在低版本ie中是不会取到的,它们会被认定为不可枚举属性;可以用obj.propertyIsEnumerable(prop)来确定对象中指定的属性是否可以被for in循环枚举