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How does a Breadth-First Search work when looking for Shortest Path?
I've done some research, and I seem to be missing one small part of this algorithm. I understand how a Breadth-First Search works, but I don't understand how exactly it will get me to a specific path, as opposed to just telling me where each individual node can go. I guess the easiest way to explain...
GitHub authentication failing over https, returning wrong email address
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Note that you can store and encrypt your credentials in a .netrc.gpg (or _netrc.gpg on Windows) if you don't want to put said credentials in clear in the url.
See "Is there a way to skip password typing when using https://github".
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Best way to check if object exists in Entity Framework?
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hi. how can we check if it exists and after that select all its data?
– virtouso
Apr 7 '15 at 1:27
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Xcode debugging - displaying images
... Awesome suggestion @mackworth. Thanks.
– arango_86
Jul 30 '18 at 10:15
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Check if an apt-get package is installed and then install it if it's not on Linux
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To check if packagename was installed, type:
dpkg -s <packagename>
You can also use dpkg-query that has a neater output for your purpose, and accepts wild cards, too.
dpkg-query -l <packagename>
To find what package owns the command, try:
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How to pass variable number of arguments to a PHP function
...o pass the function depends on the length of an array. Is there a way to call a PHP function with a variable number of arguments?
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Python pip install fails: invalid command egg_info
I find that recently often when I try to install a Python package using pip , I get the error(s) below.
15 Answers
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HTTPKeepAlive，开启还是关闭 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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其中，各项结果的含义如下：
Active connections: number of all open connections
Server accepts handled requests: nginx accepted 66542336512 connections, handled 66542336512 connections (no one was closed just it was accepted), and handles 67713042963 requests
Reading: nginx reads r...
MFC日历控件完全自绘MyCalendar Control - 源码下载 - 清泛网 - 专注C/C++及内核技术
...resting Windows control, I have found much interesting things on calendars all over the Internet. I hope to extend the current control to support other types of calendars.
WinXP,Win7,Win8,Win1057K
What is stack unwinding?
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Stack unwinding is usually talked about in connection with exception handling. Here's an example:
void func( int x )
{
char* pleak = new char[1024]; // might be lost => memory leak
std::string s( "hello world" ); // will be properly de...