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What does the “Just” syntax mean in Haskell?
I have scoured the internet for an actual explanation of what this keyword does. Every Haskell tutorial that I have looked at just starts using it randomly and never explains what it does (and I've looked at many).
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Java 256-bit AES Password-Based Encryption
I need to implement 256 bit AES encryption, but all the examples I have found online use a "KeyGenerator" to generate a 256 bit key, but I would like to use my own passkey. How can I create my own key? I have tried padding it out to 256 bits, but then I get an error saying that the key is too long. ...
iPhone App 开发第一步：从零到真机调试HelloWorld - 更多技术 - 清泛网 - ...
...VMWare之后安装Mac OS X Snow Leopard，再升级，再安装XCode 4.2和iOS SDK 5.0，是最为费劲和折腾的一种方式了，如果条件允许，请勿搞些折腾，费时费力。此后真机调试用的是自己的iPhone 4s，系统5.0已越狱，非越狱机器且无IDP账号怎么调...
Media query to detect if device is touchscreen
...hscreen device? If there is no way, do you suggest using a JavaScript solution such as !window.Touch or Modernizr?
10 Ans...
Benefits of EBS vs. instance-store (and vice-versa) [closed]
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When Not To
At some points in time, it may be cheaper to achieve faster IO on Instance Store instances. There was a time when it was certainly true. Now there are many options for EBS storage, catering to many needs. The options and their pricing evolve constantly as technology changes. If you ha...
Can Json.NET serialize / deserialize to / from a stream?
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UPDATE: This no longer works in the current version, see below for correct answer (no need to vote down, this is correct on older versions).
Use the JsonTextReader class with a StreamReader or use the JsonSerializer overload that takes a StreamReader directly:
var serial...
做程序猿的老婆应该注意的一些事情 - 杂谈 - 清泛网 - 专注C/C++及内核技术
...，此时他已经换了一次工作，到了一家创业公司，开始做iOS。我比较佩服程序猿的一点在于他对行业发展还是比较敏感的，当时学习iOS就是个例证，以及自己没事儿吹牛说起大学就预测出微博类的产品会火，比特币刚出来几乎还...
How to set the width of a cell in a UITableView in grouped style
... width while narrow down UITableView width is not trivial work, not to mention that expanding subviews beyond its superview is not a very elegant thing to do in the first place.
Custom cell rendering to fake a narrower width
To do this, you have to prepare special background images with horizontal ...
Aligning UIToolBar items
...itWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
[toolbar setItems:[NSArray arrayWithObjects:flexibleSpace, settingsButton,deleteButton,aboutButton, flexibleSpace, nil]];
Adding these as you would any other toolbar items will distribute space evenly between the ...
White space showing up on right side of page when background image should extend full length of page
...page background images are having problems in FireFox as well as Safari in iOS on iPads/iPhones with white space showing up on the right side of the page.
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