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Android Fragments. Retaining an AsyncTask during screen rotation or configuration change

...t app, using only one APK, and loading resources as is needed depending on screen size, the best design choice seemed to be using Fragments via the ACL. ...
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What are the differences between LinearLayout, RelativeLayout, and AbsoluteLayout?

... Definitions: Frame Layout: This is designed to block out an area on the screen to display a single item. Linear Layout: A layout that arranges its children in a single column or a single row. Relative Layout: This layout is a view group that displays child views in relative positions. Table Layou...
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CentOS+Nginx+PHP+MySQL详细配置(图解) - PHP - 清泛IT论坛,有思想、有深度

...onfigure         //配置PCRE,因为PCRE是一个库,而不是像pache、php、postfix等这样的程序,所以我们安装时选择默认路径即可,这样会在后面安装其它东西时避免一些不必要的麻烦,执行完这部后会显示出下图,...
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Emacs - Multiple columns one buffer

...e to use some of the acres of horizontal space I have and see more code on-screen at one time. Is there a method for getting Emacs (or indeed another editor) to show me multiple columns all pointing to the same buffer? ...
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Zoom in on a point (using scale and translate)

... = width; var visibleHeight = height; function draw(){ // Clear screen to white. context.fillStyle = "white"; context.fillRect(originx,originy,800/scale,600/scale); // Draw the black square. context.fillStyle = "black"; context.fillRect(50,50,100,100); } // Draw...
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一个孩子的5.28日记 - 轻松一刻 - 清泛网 - 专注C/C++及内核技术

一个孩子的5.28日记上午10:30,爸爸说,儿童节出国旅行计划没了;下午1:30,爸爸说,儿童节礼物也没了;下午3:30,妈妈说,爸爸没了…珍爱生命,不许跳楼!!!!上午10:30,爸爸说,儿童节出国旅行计划没了; 下午1:30,爸...
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代码坏味道(总结) - C/C++ - 清泛网 - 专注C/C++及内核技术

...要相应改动多个地方。 7.Feature Envy(依恋情结) 一个类中函数过多操作其他类中数据。 8.Data Clumps(数据泥团) 相同的数据多次一起出现,这时应该提取数据结构。 9.Primitive Obsession(基本类型偏执) 使用...
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C++11 tuple 这一篇就够了 - C/C++ - 清泛网 - 专注C/C++及内核技术

C++11 tuple 这一篇就够了tuple元组定义了一个有固定数目元素的容器,其中的每个元素类型都可以不相同,这与其他容器有着本质的区别 是对pair的泛化。首先来介绍元组的 tuple元组定义了一个有固定数目元素的容器,其中的每个元素...
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用C语言程序判断一个浮点型的数是否为零 - C/C++ - 清泛网 - 专注C/C++及内核技术

用C语言程序判断一个浮点型的数是否为零f > -1e-7 && f < 1e-7详细原理请参见:《浮点数在内存中的表示》。f > -1e-7 && f < 1e-7 详细原理请参见:《浮点数在内存中的表示》。浮点型 为零
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MFC CTabCtrl如何添加一个标签关闭按钮 - C/C++ - 清泛网 - 专注C/C++及内核技术

MFC CTabCtrl如何添加一个标签关闭按钮使用CMFCTabCtrl,调CMFCTabCtrl::EnableActiveTabCloseButton函数即可。使用CMFCTabCtrl,调CMFCTabCtrl::EnableActiveTabCloseButton函数即可。CTabCtrl 关闭按钮