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Checking images for similarity with OpenCV
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A little bit off topic but useful is the pythonic numpy approach. Its robust and fast but just does compare pixels and not the objects or data the picture contains (and it requires images of same size and shape):
A very simple and fa...
Where do I use delegates? [closed]
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I had a project which used win32 Python.
Due to various reasons, some modules used odbc.py to access the DB, and other modules - pyodbc.py.
There was a problem when a function needed to be used by both kinds of modules. It had an connection obje...
Make Https call using HttpClient
...o use higher TLS version by default. To overcome this problem add the following in your code.
System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12 | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls;
Modifying your example code, it would be
HttpClient httpClient = new...
How do I convert dates in a Pandas data frame to a 'date' data type?
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Difference between \w and \b regular expression meta characters
..._] -- it will also match alphanumeric Unicode code points, and may match 8-bit ISO-Latin-1 characters if the locale is set appropriately.
– Tim Pierce
Dec 19 '13 at 5:14
add a...
What is C# analog of C++ std::pair?
...ss called Tuple. Therefore you can say Tuple.Create("Hello", 4) which is a bit easier than new Tuple<string, int>("Hello", 4). (By the way, .NET4.0 is already here since 2010.)
– Jeppe Stig Nielsen
Aug 15 '12 at 18:46
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Only read selected columns
...number of columns how else are you going to determine it without reading a bit of it to deduce how many there are?
– Gavin Simpson
Nov 29 '12 at 0:45
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How do I know if a generator is empty from the start?
...ady defined the variable. You could check the value of thing, but that's a bit unreliable. Instead, just set a flag within the block and check it afterward:
if not thing_generated:
print "Avast, ye scurvy dog!"
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C/C++中的段错误（Segmentation fault） - C/C++ - 清泛网 - 专注C/C++及内核技术
... 编译和执行一下
$ gcc -o segerr segerr.c
$ ./segerr
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段错误
咋一看，好像没有问题哦，不就是读取一个数据然后给输出来吗？
下面我们来调试一下，看看是什么原因？
$ gcc -g -o segerr segerr.c ...
Mac OS X - EnvironmentError: mysql_config not found
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ArunArun
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