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Introduction of OpenCascade Foundation Classes Open CASCADE基础类简介 eryar@163.com 一.简介 1. 基础类概述 Foundation Classes Overview 本文将对Open CASCADE中的基础类进行介绍及如何使用基础类.更多信息可访问其官网:www.opencascade.org/support/training/. 基础类库提供了一些通用功能,如自动动态内存管理.集合.异常处理.泛型编程和plug-in的…
在前面的部分中,我们学习了Code-First默认约定,Code-First使用默认的约定,根据你的领域类,然后生成概念模型. Code-First模式,发起了一种编程模式:约定大于配置.这也就是说,当你需要的时候,你可以重写这些约定,通过配置你的领域类.这里有两种方式来配置你的领域类实体: DataAnnotations(数据注解) Fluent API(姑且翻译为:流畅API) 数据注解: 数据注解是基于配置的简单特性,你可以应用到你的领域类或者其属性中.你可能会发现大多数的特性都在这个命令…
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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…
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The following classes could not be instantiated:- android.support.v4.widget.DrawerLayout (Open Class, Show Exception) Tip: Use View.isInEditMode() in your custom views to skip code or show sample data when shown in the IDE 我使用了NavigationDrawer这个模块去创建…
Size Classes with Xcode 6: One Storyboard for all Sizes 为所有的尺寸准备一个Storyboard 我最喜欢的Xcode6的特性是新的size classes 概念,有了它,我们解决了“我如何能够快速的为那么多的不同尺寸屏幕以及方向的设备写app”.他们也让在一个storyboard中创建一个通用的app.通过与新的适应屏幕的controller联合,它能够更简单的依靠interface builder,而不是与之对抗,从而简化了你应用的布局…
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原文:Learning from Imbalanced Classes 数据不平衡是一个非常经典的问题,数据挖掘.计算广告.NLP等工作经常遇到.该文总结了可能有效的方法,值得参考: Do nothing. Sometimes you get lucky and nothing needs to be done. You can train on the so-called natural (or stratified) distribution and sometimes it works w…
How can I protect derived classes from breaking when I change the internal parts of the base class? A class has two distinct interfaces for two distinct sets of clients: It has a public interface that serves unrelated classes It has a protected inter…
The dojo/_base/declare module is the foundation of class creation within the Dojo Toolkit. declare allows for multiple inheritance to allow developers to create flexible code and avoid writing the same code routines. Dojo, Dijit, and Dojox modules al…
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方法1glibc 官方要求的2.14版本以上 方法2:http://www.secdoctor.com/html/yyjs/31101.html 方法3: http://dl.bintray.com/sequenceiq/sequenceiq-bin/ http://www.secdoctor.com/html/yyjs/31101.html 方法4:http://www.aboutyun.com/thread-12343-1-1.html 虽然我在64位的linux上重新编译了hadoop,并…
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When thinking about inner classes in java, the first thing that comes to my mind is that, WHY do we need to add inner classes to normal one? Leave alone all the specific details of the Java syntax, I think the reason is quite SIMPLE: we are human bei…
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The same solution can be applied for LINQ to SQL. The snippet the article shows for using the MetadataType will use perfectly well with LINQ to SQL generated classes: [MetadataType(typeof(MovieMetaData))] public partial class Movie { } public class M…
这一条款主要来讨论模板中迭代器的属性iterator_category,它可以通过类似于vector<int>::iterator::iterator_category的方式来取得. 到这里我们有必要学习一下STL迭代器的类型,总共有五种,分别是: input_iterator:只读,只能逐个前移 output_iterator:只写,只能逐个前移 forward_iterator:可读可写,只能逐个前移 bidirectional_iterator:可读可写,支持逐个前移和后移 random…
Information hiding is important for many reasons, most of which stem from the fact that it decouples the modules that comprise a system, allowing them to be developed, tested, optimized, used, understood, and modified in isolation. Advantage Speeds u…
Feature Interface Abstract class Defining a type that permits multiple implementations Y Y Permitted to contain implementations. N Y The implemented class must reside the class hierarchy. N Y Single inheritance N Y Easy to evolve N Y Advantages of In…
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Nested class types Usage and remark Advantage Disadvantage static member classes Use for public helper class, useful only in conjunction with its outer class. (Such as the operation types of a Calculater). Save memory. Class specific. Not instance sp…