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How can a time function exist in functional programming?
I've to admit that I don't know much about functional programming. I read about it from here and there, and so came to know that in functional programming, a function returns the same output, for same input, no matter how many times the function is called. It's exactly like a mathematical function w...
How to get an MD5 checksum in PowerShell
...eProvider
$hash = [System.BitConverter]::ToString($md5.ComputeHash([System.IO.File]::ReadAllBytes($someFilePath)))
Starting in PowerShell version 4, this is easy to do for files out of the box with the Get-FileHash cmdlet:
Get-FileHash <filepath> -Algorithm MD5
This is certainly prefera...
@import vs #import - iOS 7
I am playing around with some of the new iOS 7 features and working with some of the Image Effects as discussed in the WWDC video "Implementing Engaging UI on iOS". For producing a blur effect within the source code for the session, UIImage was extended via a category which imports UIKit like so:
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C++ Lock-free Hazard Pointer（冒险指针） - C/C++ - 清泛网 - 专注C/C++及内核技术
...re 函数中使用顺序一致性内部屏障 pointer->target_ = ...，x86 平台上会翻译为 mfence 指令，与 lock add 指令相比也不遑多让。在读多写少的前提下，可以将读写两边的屏障替换为非对称内存屏障，将读部分的开销转移到写部分中。可参...
iOS Detection of Screenshot?
...//tumblr.jeremyjohnstone.com/post/38503925370/how-to-detect-screenshots-on-ios-like-snapchat
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2D cross-platform game engine for Android and iOS? [closed]
...alade user. It's good for a basic game, but if you are looking for some serious advanced gaming stuff, you can also use Cocos2D-x with Marmalade. I've never used Cocos2D-x, but there's an Extension on Marmalade's Github.
Another good thing about Marmalade is it's EDK (Extension Development Kit), whi...
Detecting iOS / Android Operating system
I've done some research, and this question has come up, but not in the way I intend. I'm building a page for a client that is a QR code landing, which is a place to download an application. So he doesn't have to print out 2 QR codes on a page, I'd like to detect the current operating system (Apple...
成功熬了四年还没死？一个IT屌丝创业者的深刻反思 - 资讯 - 清泛网 - 专注C...
...一个来自微软的高级工程师，辞职去一个养猪场，做开放平台经理。他的到来，不仅会让养猪圈感到无比荣幸;更意味着，利用他在IT界训练出来的高效工作方式和逻辑思维能力，他可以掀起一场养猪行业的革命。使得20年后才会...
iphone/ipad: How exactly use NSAttributedString?
... in the label, justified, "Hello" in red and " World!" in gray.
Note: In iOS 6+ you can render attributed strings using the attributedText property of UILabel.
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Camera access through browser
...wser without being a native app. We are having trouble making this work in iOS. Is anyone aware of a solution for this?
6 A...