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Open document with default OS application in Python, both in Windows and Mac OS
...['open', filename])
In Python 3.5+ you can equivalently use the slightly more complex but also somewhat more versatile
subprocess.run(['open', filename], check=True)
If you need to be compatible all the way back to Python 2.4, you can use subprocess.call() and implement your own error checking:...
Is there a way for multiple processes to share a listening socket?
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You can share a socket between two (or more) processes in Linux and even Windows.
Under Linux (Or POSIX type OS), using fork() will cause the forked child to have copies of all the parent's file descriptors. Any that it does not close will continue to be shared, ...
Is it more efficient to copy a vector by reserving and copying, or by creating and swapping? [duplic
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How do you perform a left outer join using linq extension methods
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How do I consume the JSON POST data in an Express application
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Difference between decimal, float and double in .NET?
...he score given to divers or ice skaters, for example.
For values which are more artefacts of nature which can't really be measured exactly anyway, float/double are more appropriate. For example, scientific data would usually be represented in this form. Here, the original values won't be "decimally ...
Define preprocessor macro through CMake?
...d for this purpose. However, recently the command has been superseded by a more fine grained approach (separate commands for compile definitions, include directories, and compiler options).
An example using the new add_compile_definitions:
add_compile_definitions(OPENCV_VERSION=${OpenCV_VERSION})
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How to iterate over values of an Enum having flags?
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How to generate random SHA1 hash to use as ID in node.js?
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243,583,606,221,817,150,598,111,409x more entropy
I'd recommend using crypto.randomBytes. It's not sha1, but for id purposes, it's quicker, and just as "random".
var id = crypto.randomBytes(20).toString('hex');
//=> f26d60305dae929ef8640a75e70dd78ab809cfe9
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BCL (Base Class Library) vs FCL (Framework Class Library)
... that contains the totality: ASP.NET, WinForms, the XML stack, ADO.NET and more. You could say that the FCL includes the BCL.
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