Categories是给你得不到源码的classes增加功能的一种方法. UIImageView+FaceAwareFill 这个类别使用了Aspect Fill内容模式,可以自动根据图像内容进行调整,当检测到人脸时,它会以脸部中心替代掉以图片的几何中心. 测试环境:Xcode 5.0,iOS 6.0以上 NSRegularEx+ObjCRegex Objective-C-RegEx-Categories是NSRegularExpression的一个延展,它可以把Object-C中的很多正则表达…

Questions that are independent of programming language.  These questions are typically more abstract than other categories. Free Language Agnostic Programming Books 97 Things Every Programmer Should Know Algorithms and Data-Structures (PDF) Algorithm…

ASK: Can you guide me how to properly link static library to iphone project. I use staic library project added to app project as direct dependency (target -> general -> direct dependecies) and all works OK, but categories. A category defined in stat…

Avoid Properties in Categories Objective-C分类中是不允许增加成员变量的(Instance variables may not be placed in categories),我们可以通过运行时函数objc_setAssociatedObject 和 objc_getAssociatedObject 来让分类支持保存和获取一些数据,从而支持属性. //EOCPerson+FriendShip.h @interface EOCPerson (FriendS…

Value categories Three primary categories primary categories mixed special Each C++ expression (an operator with its operands, a literal, a variable name, etc.) is characterized by two independent properties: a type and a value category. Each express…

Chart.java: /** * @Title:Chart.java * @Package:com.fusionchart.model * @Description:FusionCharts 封装dataSet和categories * @author:Youhaidong(游海东) * @date:2014-1-22 下午10:10:44 * @version V1.0 */ package com.fusionchart.model; import java.io.Serializable…

Opencart 3的menu菜单默认只调用一级和二级菜单,但很多电商网站类目复杂,三级菜单一般都是需要的,甚至更深,那么如何调用三级菜单level 3 sub categories呢?ytkah有一些思路可以参考一下. 打开Catalog/controller/common/menu.php文件,修改成如下代码 <?php class ControllerCommonMenu extends Controller { public function index() { $this->load…

转载翻译自:http://rypress.com/tutorials/objective-c/categories 一.Categories(分类)      Categories是一个把单个类定义分作好几个文件的方式.它的目标是通过模块化减少代码量比较大的压力.这避免了你的代码成为1000+行的文件,这样操作和分配精确几乎是不可能的.一个好的类定义是一个独特开发者必须的.                 这个图是用多个文件来实现Car类.              在这个模块,我们在不接触它的…

Objective-C RegEx Categories https://github.com/bendytree/Objective-C-RegEx-Categories 使用说明:将 RegExCategories.h RegExCategories.m 文件拖入工程中引入头文件即可. ========================================================================== //匹配电话号码(手机号以13, 15,18开头,八个 \…

https://www.capterra.com/categories this software categories is valuable.…