When creating UIs with utility classes, a lot of repetition can occur within the HTML markup. In this lesson, we see how this concern can be addressed by extracting a group of tailwind utility classes into a component classname. We create a Blocks El…

sonarlint提示add a private constructor to hide the implicit public one Utility classes should not have public constructors Utility classes, which are collections of static members, are not meant to be instantiated. Even abstract utility classes, which…

In this lesson, we learn how to generate custom utility classes in tailwind. We add new properties to our JavaScript config object to generate new helper classes to suit our needs. Update gulpfile.js: const gulp = require("gulp"); const postcss…

In Java, a utility class is a class that defines a set of methods that perform common functions. This post shows the most frequently used Java utility classes and their most commonly used methods. Both the class list and their method list are ordered…

原文地址:http://alphawang.com/blog/2014/09/utility-classes-are-evil/ This post is a summary of this artical and this one. What's Utility Classes A utility class is a class filled with static methods. It is usually used to isolate a "useful" algorith…

You are able to extend the custom css with hover, focus, group-hover, responsive variants class in tailwind. https://tailwindcss.com/docs/functions-and-directives/#variants <section> <div> <h2 class="banana hover:chocolate"> so…

Ordinarily, if we do not use a function, we do not need to supply a definition of the function. However, we must define every virtual function, regardless of whether it is used, bacuase compiler has no way to determine whether a virtual function is u…

见代码: #!/usr/bin/env python # -*- coding: utf-8 -*- # @Time : 2018/08/01 16:58 from abc import ABCMeta, abstractmethod class SClass(object): __metaclass__ = ABCMeta @abstractmethod def my_print(self): pass class C0Class(SClass): pass class C1Class(SCl…

In this lesson, we learn how to target specific states of elements and apply styles only when those states are triggered. <p class="mb-4"> I am a <a class="text-purple hover:text-orange focus:bg-yellow" href="#">t…

In this lesson, we learn how to generate CSS utility classes from Tailwind's JavaScript config file. We set up a new project from scratch, install tailwind, generate a config file and build a simple gulp task that runs that file through PostCSS to ge…

格式:问题名字+问题出现的次数 Resources should be closed2 资源未关闭,打开发现有两处用到的IO流没有关闭 Conditions should not unconditionally evaluate to "TRUE" or to "FALSE"1 if/else判断里出现了重复判断,比如在if(a>10)的执行体里面又判断if(a<0),而后者肯定不会是true Exception handlers should pres…

In this lesson, we learn how to control what utility classes are generated for each utility class module. We look at how we can “opt-in” for responsive variations, as well as different states like hover and focus. In tailwind.js: you need to add: mod…

Developer beNative over on GitHub has a project called Concepts which is a massive collection of Delphi modular demos featuring over twenty different language features, design patterns and some interresting frameworks, and components. A copy of all o…

原文 What’s the difference between an interface and an abstract class in Java? It’s best to start answering this question with a brief definition of abstract classes and interfaces and then explore the differences between the two. A class must be decla…

Download Source - 955.2 KB Content Part 1: Angular2 Setup in Visual Studio 2017, Basic CRUD application, third party modal pop up control Part 2: Filter/Search using Angular2 pipe, Global Error handling, Debugging Client side Part 3: Angular 2 to Ang…

Qt Widgets C++ Classes The Qt Widgets module extends Qt GUI with C++ widget functionality. More... API Reference These are links to the API reference materials. Qt Widgets C++ Classes Basic Widget Classes Advanced Widget Classes Abstract Widget Class…

摘要:简单介绍了如何编写一个FastReport的组件,并且注册到FastReport中使用.   Writing Custom Report Components 编写自定义报表组件 FastReport has a large number of components that can be placed on a report design page. They are: text, picture, line, geometrical figure, OLE, rich text, ba…

Django 中的 model 继承和 Python 中的类继承非常相似,只不过你要选择具体的实现方式:让父 model 拥有独立的数据库:还是让父 model 只包含基本的公共信息,而这些信息只能由子 model 呈现. Django中有三种继承关系: 1.通常,你只是想用父 model 来保存那些你不想在子 model 中重复录入的信息.父类是不使用的也就是不生成单独的数据表,这种情况下使用抽象基类继承 Abstract base classes. 2.如果你想从现有的Model继承并让每个…

https://msdn.microsoft.com/en-us/library/ff477603(v=vs.100).aspx This topic provides an overview of the .ttinclude file that contains utility classes that help the ADO.NET templates with the code generation process. This file is used by the ADO.NET E…

We will demonstrate composing classes using the utility classes function. classes is also what we recommend for theming. Using pure CSS classes means that the component consumers are free to customize the component using any technology (not just Type…

Writing similar classes with minor variations, like utility classes, can be a pain to write and update. Sometimes just a single character is the only difference between classes and updating the defining parameter means we need to change it for every…

我们先用提干两个修饰词中的任意一个创建一个类 package components.javaTest.day4_20200910; /** * Question004: * java面试题0004-在一个类上是否可以用abstract和final同时加以修饰? */ public final class AbstractAndFinal { } package components.javaTest.day4_20200910; /** * Question004: * java面试题0004-…

from:http://msdn.microsoft.com/en-us/library/ms229335.aspx 我们平时在VS.net里引用的那些类库就是从这里来的 The .NET Framework class library is a library of classes, interfaces, and value types that provides access to system functionality and is designed to be the foundat…

6. IoC容器 6.1 Spring IoC容器和bean介绍 这一章节介绍了Spring框架的控制反转(IoC)实现的原理.IoC也被称作依赖注入(DI).It is a process whereby objects define their dependencies, that is, the other objects they work with, only through constructor arguments, arguments to a factory method, o…

Learning Java the O'Reilly's Way (Part I) Java 技术可以说是越来越重要了,不但可以用在计算机上,甚至连电视等家电用品,行动电话.个人数字助理(PDA)等电子产品,以及智能卡都可以透过 Java 的技术来为人们创造更便利的生活.许多人因此对 Java 感兴趣,想好好学习 Java. 因为讲授 Java 课程的关系,这几年来,不少人问我:怎样才能学好 Java,我给他们的建议很简单 ---『多读 Java 的好书,可以有系统又轻易地获得许多高手的经验』.…

Mirror of Apple’s iOS samples This repository mirrors Apple’s iOS samples. Name Topic Framework Description ABUIGroups Data Management(Contact Data) AddressBook ABUIGroups shows how to check and request access to a user’s address book database. It al…

Java™ Platform, Standard Edition 7API Specification This document is the API specification for the Java™ Platform, Standard Edition. See: Description Packages  Package Description java.applet Provides the classes necessary to create an applet and the…

an open-source JavaScript libraryfor mobile-friendly interactive maps Overview Tutorials Docs Download Plugins Blog Leaflet Plugins While Leaflet is meant to be as lightweight as possible, and focuses on a core set of features, an easy way to extend…

缘起:最近想在部门推Python语言,写这个blog主要就是个教程大纲,之前先列出一些资源:Python历史:http://www.docin.com/p-53019548.html                   :http://blog.csdn.net/zhchongyao/article/details/7748668 Python中文社区主站入口:http://woodpecker.org.cn/Python简明教程:http://woodpecker.org.cn/abyteof…

本文内容: 20个最常见的JAVA面试问题(附答案) 13个单例模式JAVA面试问题(附答案) 说说JVM和垃圾收集是如何工作的(附答案) 说说如何避免JAVA线程死锁(附答案) Java中HashSet和HashMap的区别(附答案) Java面试中和Collection有关的10个问题(附答案) Java面试中和Spring相关的10个问题(附答案) 30个C/C++/Java面试中的常见算法问题 Stackoverflow中回复超过20的算法问题 面试攻略 微软面试技术题(附答案) 20个…