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What guarantees are there on the run-time complexity (Big-O) of LINQ methods?
...'ve recently started using LINQ quite a bit, and I haven't really seen any mention of run-time complexity for any of the LINQ methods. Obviously, there are many factors at play here, so let's restrict the discussion to the plain IEnumerable LINQ-to-Objects provider. Further, let's assume that any ...
__attribute__ - C/C++ - 清泛网 - 专注C/C++及内核技术
...的方式。下面介绍几个常见的属性参数。
__attribute__ format
该__attribute__属性可以给被声明的函数加上类似printf或者scanf的特征，它可以使编译器检查函数声明和函数实际调用参数之间的格式化字符串是否匹配。该功能十分有用...
jquery data selector
I need to select elements based on values stored in an element's .data() object. At a minimum, I'd like to select top-level data properties using selectors, perhaps like this:
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How to get the date from jQuery UI datepicker
I want to get the date from datepicker whenever user choose the date in jQuery UI datepicker and click the button on the form.
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get UTC time in PHP
How can I get UTC/GMT +/- time stamp using PHP's date() function? For example, if I try
12 Answers
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The static keyword and its various uses in C++
The keyword static is one which has several meanings in C++ that I find very confusing and I can never bend my mind around how its actually supposed to work.
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Get the current displaying UIViewController on the screen in AppDelegate.m
... UIViewController on the screen need to response to push-notifim>cat m>ions from APNs, by setting some badge views. But how could I get the UIViewController in method applim>cat m>ion:didReceiveRemoteNotifim>cat m>ion : of AppDelegate.m ?
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Programmatically Lighten or Darken a hex color (or rgb, and blend colors)
Here is a function I was working on to programmatically lighten or darken a hex color by a specific amount. Just pass in a string like "3F6D2A" for the color ( col ) and a base10 integer ( amt ) for the amount to lighten or darken. To darken, pass in a negative number (i.e. -20 ).
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Convert RGB to RGBA over white
...o an as-transparent-as-possible rgba color (when displayed over white). Make sense? I'm looking for an algorithm, or at least idea of an algorithm for how to do so.
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Using Emacs as an IDE
Currently my workflow with Emacs when I am coding in C or C++ involves three windows. The largest on the right contains the file I am working with. The left is split into two, the bottom being a shell which I use to type in compile or make commands, and the top is often some sort of documentation ...