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How can Xcode 6 adaptive UIs be backwards-compatible with iOS 7 and iOS 6?

...e to the UI with Size Classes in Interface Builder DO appear correctly on iOS 7 devices and the Preview in Xcode. For example, I changed some Auto Layout constraints and font sizes for Regular height Regular width and those changed constraints are visible in the iPad Simulator running iOS 7.0. All ...
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Run PHP Task Asynchronously

I work on a somewhat large web application, and the backend is mostly in PHP. There are several places in the code where I need to complete some task, but I don't want to make the user wait for the result. For example, when creating a new account, I need to send them a welcome email. But when they h...
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How do I install from a local cache with pip?

...is problem. From the docs: pip2pi builds a PyPI-compatible package repository from pip requirements pip2pi allows you to create your own PyPI index by using two simple commands: To mirror a package and all of its requirements, use pip2tgz: $ cd /tmp/; mkdir package/ $ pip2tgz packages/ htt...
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multiprocessing: How do I share a dict among multiple processes?

...ble than pyshmht library that uses tons of memory and doesn't work for Mac OS. Though my dict only works for plain strings and is immutable currently. I use linear probing implementation and store keys and values pairs in a separate memory block after the table. from mmap import mmap import struct ...
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一分钟明白 VS manifest 原理 - C/C++ - 清泛网 - 专注C/C++及内核技术

...pc上,用一组建往往会有不止一个版本(c:/windows/winsxs或系统目录下),程序在加载的时候,不知加载哪个,于是manifest文件来指明。 manifest在哪儿,如何创建。 如果用VS开发,可以Set通过porperty->configuration properties->linker->manifest...
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C++中判断文件、目录是否存在的几种方法 - C/C++ - 清泛网 - 专注C/C++及内核技术

...式。 二、File C中也是同样道理,我们可是File的相关操作。 File* fh = fopen("hello","r"); if(fh == NULL) { printf("%s","can not open the file"); } 三、_access 当然C中还有一种方式是直接调用c的函数库。 就是函数 int _access(const char* pa...
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VC/MFC 临界区域使用方法实例 - C/C++ - 清泛网 - 专注C/C++及内核技术

...为共享的资源)被不同的线程同时访问,实现线程的同步操作。保证只能由先进入临界区域的一个线程...临界区域的作用:避免临界区域内的数据(一般为共享的资源)被不同的线程同时访问,实现线程的同步操作。保证只能由先进...
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c++文件流基本用法(ifstream, ostream,fstream) - C/C++ - 清泛网 - 专注C/C++及内核技术

...am>名字空间: stdfstream提供了三个类,用来实现c++对文件的操作。(文件的创建,读写)。ifstream -- 从已...需要包含的头文件: <fstream>,名字空间: std。 fstream提供了三个类,用来实现c++对文件的操作(文件的创建,读写): i...
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XP风格按钮的实现 - C/C++ - 清泛网 - 专注C/C++及内核技术

XP风格按钮的实现方法一:利用XPButton类实现具体操作步骤如下:1.从互联网上下载XPButton类;2.创建基于对话框的MFC工程Test,将下载的XPButton.cpp和XPButt...方法一:利用XPButton类实现 具体操作步骤如下: 1.网上下载XPButton类;请参...
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十张图带你入门Map/Reduce - C/C++ - 清泛网 - 专注C/C++及内核技术

...个数据时,而另一个事件正在读取这段数据。这就是并发操作。如果你事件作用的数据段没有被其它事件操作,那么做的将是并行操作。显而易见:你可以使用扩展来解决并发性问题。 举个例子:如果你有一张记录了城市的表...