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Unit testing void methods?
...is the best way to unit test a method that doesn't return anything? Specifically in c#.
11 Answers
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Access lapply index names inside FUN
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Here the function uses "global" variable x and extracts the names in each call.
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How to download image using requests
...ou need to iterate over the requests.Response itself: for chunk in r: .... Calling iter_content() without a chunk_size will iterate in 1 byte chunks.
– dtk
Jun 2 '15 at 23:23
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When to use AtomicReference in Java?
...ention of that lock Object. Thats because most locks require an OS system call, and your thread will block and be context switched out of the CPU to make way for other processes.
The other option is to use an AtomicRefrence.
public static AtomicReference<String> shared = new AtomicReference...
What can you use Python generator functions for?
...sible.
Another use for generators (that is really the same) is to replace callbacks with iteration. In some situations you want a function to do a lot of work and occasionally report back to the caller. Traditionally you'd use a callback function for this. You pass this callback to the work-functio...
How to present a simple alert message in java?
Coming from .NET i am so used calling Alert() in desktop apps. However in this java desktop app, I just want to alert a message saying "thank you for using java" I have to go through this much suffering:
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Embed YouTube video - Refused to display in a frame because it set 'X-Frame-Options' to 'SAMEORIGIN'
...sure the URL contains embed rather watch as the /embed endpoint allows outside requests, whereas the /watch endpoint does not.
<iframe width="420" height="315" src="https://www.youtube.com/embed/A6XUVjK9W4o" frameborder="0" allowfullscreen></iframe>
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How to quickly and conveniently disable all console.log statements in my code?
...how up!');
}
);
How to use the above 'logger'? In your ready event, call logger.disableLogger so that console messages are not logged. Add calls to logger.enableLogger and logger.disableLogger inside the method for which you want to log messages to the console.
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How to list all installed packages and their versions in Python?
...what packages have been installed with your installer tools you can simply call this:
pip freeze
It will also include version numbers for the installed packages.
Update
pip has been updated to also produce the same output as pip freeze by calling:
pip list
Note
The output from pip list is f...
Is there a way to cache GitHub credentials for pushing commits?
...n Git to avoid having to type your password all the time for HTTP / HTTPS, called credential helpers. (Thanks to dazonic for pointing out this new feature in the comments below.)
With Git 1.7.9 or later, you can just use one of the following credential helpers:
git config --global credential.helpe...