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What would cause an algorithm to have O(log n) complexity?
My knowledge of big-O is limited, and when log terms show up in the equation it throws me off even more.
6 Answers
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What is the use of ObservableCollection in .net?
...anges to the collection (add, move, remove) occur. It is used heavily in WPF and Silverlight but its use is not limited to there. Code can add event handlers to see when the collection has changed and then react through the event handler to do some additional processing. This may be changing a UI...
How to configure postgresql for the first time?
I have just installed postgresql and I specified password x during installation.
When I try to do createdb and specify any password I get the message:
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How to get full path of a file?
Is there an easy way I can print the full path of file.txt ?
32 Answers
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MFC CString::Format()函数详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...格式指令具有以下的形式：
"%" [index ":"] ["-"] [width] ["." prec] type
它是以"%"开始,而以type结束，type表示一个具体的类型。中间是用来格式化type类型的指令字符，是可选的。
先来看看type,type可以是以下字符：
d 十制数，表...
GitHub: searching through older versions of files
...ng GitHub I can search through all the current versions of my files in a repo. However, I would also like to search through the older versions of my repo files. For example, say, I used to have a function called get_info() in my code, but deleted it several versions ago, is it possible to search for...
How can I log the stdout of a process started by start-stop-daemon?
I am using an init script to run a simple process, which is started with:
11 Answers
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Git stash uncached: how to put away all unstaged changes?
Suppose two set of changes are made in a project versioned by git. One set is staged and the other is not.
4 Answers
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Complete Working Sample of the Gmail Three-Fragment Animation Scenario?
TL;DR: I am looking for a complete working sample of what I'll refer to as "the Gmail three-fragment animation" scenario. Specifically, we want to start with two fragments, like this:
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install / uninstall APKs programmatically (PackageManager vs Intents)
My application installs other applications, and it needs to keep track of what applications it has installed. Of course, this could be achieved by simply keeping a list of installed applications. But this should not be necessary! It should be the responsibility of the PackageManager to maintain the ...