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Pandas convert dataframe to array of tuples
...:
subset = data_set[['data_date', 'data_1', 'data_2']]
tuples = [tuple(x) for x in subset.to_numpy()]
for pandas < 0.24 use
tuples = [tuple(x) for x in subset.values]
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.NET Process.Start default directory?
... application from inside of a C# .NET console application. It works fine for the case where the Java application doesn't care what the "default" directory is, but fails for a Java application that only searches the current directory for support files.
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C++ SpinLock 自旋锁的代码实现（全网最简略的方式） - C/C++ - 清泛网 - ...
...ock..." << endl;
lck.unlock();
});
thd.detach();
this_thread::sleep_for(chrono::milliseconds(50));
cout << "main thread lock... wait." << endl;
lck.lock();
cout << "SpinLock done." << endl;
--End--自旋锁,spinlock,atomic
Difference between \w and \b regular expression meta characters
...characters? It is my understanding that both these metacharacters are used for word boundaries. Apart from this, which meta character is efficient for multilingual content?
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Node.js app can't run on port 80 even though there's no other process blocking the port
...pp.js will do it if you have authorization to use sudo (just tacking it on for any beginners).
– AlexMA
Oct 6 '13 at 2:29
21
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Saving images in Python at a very high quality
...nning the commands to plot the image:
plt.savefig('destination_path.eps', format='eps')
I have found that eps files work best and the dpi parameter is what really makes them look good in a document.
UPDATE:
To specify the orientation of the figure before saving simply call the following before ...
Trouble comparing time with RSpec
I am using Ruby on Rails 4 and the rspec-rails gem 2.14. For a my object I would like to compare the current time with the updated_at object attribute after a controller action run, but I am in trouble since the spec does not pass. That is, given the following is the spec code:
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What version of Visual Studio is Python on my computer compiled with?
... 1922
Visual C++ 2019 (16.3) 1923
Source: the documentation for the _MSC_VER predefined macro
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What's a good rate limiting algorithm?
...o-code, or better, Python. I am trying to implement a rate-limiting queue for a Python IRC bot, and it partially works, but if someone triggers less messages than the limit (e.g., rate limit is 5 messages per 8 seconds, and the person triggers only 4), and the next trigger is over the 8 seconds (e....
Simple example of threading in C++
... is automatically started upon construction.
If later on you want to wait for the thread to be done executing the function, call:
t1.join();
(Joining means that the thread who invoked the new thread will wait for the new thread to finish execution, before it will continue its own execution).
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