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How to use shared memory with Linux in C
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There are two approaches: shmget and mmap. I'll talk about mmap, since it's more modern and flexible, but you can take a look at man shmget (or this tutorial) if you'd rather use the old-style tools.
The mmap() function can be used to allocate memory buffer...
List comprehension in Ruby
... % 2 == 0 ? x * 3 : nil}.compact
Slightly cleaner, at least to my taste, and according to a quick benchmark test about 15% faster than your version...
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python requests file upload
... uploading a file using Python requests library. I searched Stack Overflow and no one seemed to have the same problem, namely, that the file is not received by the server:
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Printing without newline (print 'a',) prints a space, how to remove?
...aaaaaaaaaaaaaaaaaaa
If you want to do this in general, build up a string and then print it once. This will consume a bit of memory for the string, but only make a single call to print. Note that string concatenation using += is now linear in the size of the string you're concatenating so this will...
How to assert two list contain the same elements in Python? [duplicate]
...h does exactly what you are looking for, as you can read from the python standard library documentation. The method is somewhat misleadingly named but it does exactly what you are looking for.
a and b have the same elements in the same number, regardless of their order
Here a simple example wh...
SVN upgrade working copy
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You have to upgrade your subversion client to at least 1.7.
With the command line client, you have to manually upgrade your working copy format by issuing the command svn upgrade:
Upgrading the Working Copy
Subversion 1.7 introduces substantial changes to the working copy
format. In pre...
Android Calling JavaScript functions in WebView
...l some javascript functions sitting in an html page running inside an android webview . Pretty simple what the code tries to do below - from the android app, call a javascript function with a test message, which inturn calls a java function back in the android app that displays test message ...
Using lambda expressions for event handlers
...der, EventArgs e)
{
//snip
MyButton.Click += new EventHandler(delegate (Object o, EventArgs a)
{
//snip
});
}
}
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How do I search for an object by its ObjectId in the mongo console?
I've found this question answered for C# and Perl, but not in the native interface. I thought this would work:
12 Answers
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“历史遗留”漏洞：浅析新型SSL/TLS漏洞FREAK - 创意 - 清泛网 - 专注C/C++及内核技术
...EAK漏洞对它进行攻击。现在像安卓、苹果手机，以及运行OS X系统的苹果Mac电脑，如果该设备含有SSL/TLS协议漏洞，即使使用HTTPS网站后依然可能遭受中间人攻击。好在Windows和Linux用户，目前并未受到该漏洞影响。
FREAK漏洞与POODLE...