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Using do block vs braces {}
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I used the Weirich style for years, but just moved away from this to always use braces. I don't remember to ever have used the info from the block style, and the definition is kinda vague. For example:
date = Timecop.freeze(1.year.ago) { format_date(Time.now) }
customer = Timecop...
Canary release strategy vs. Blue/Green
... environment is created. Once the new
environment is tested, it takes over from the old version. The old
environment can then be turned off.
A/B Testing - Two versions of an application are running at the same time. A portion of requests go to each. Developers can then compare the versions.
C...
How do you write a migration to rename an ActiveRecord model and its table in Rails?
...e caveats:
Let's use a real-world example I faced today: renaming a model from 'Merchant' to 'Business.'
Don't forget to change the names of dependent tables and models in
the same migration. I changed my Merchant and MerchantStat models to Business and BusinessStat at the same time. Otherwise I'...
How to find all serial devices (ttyS, ttyUSB, ..) on Linux without opening them?
...nd. I did as above and it worked. I then unplugged my (FTDI) serial device from the USB and afterwards it produced the error that you described.
– Warpspace
Jan 29 '19 at 8:30
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Is GridFS fast and reliable enough for production?
...le. It doesn't matter if the image is lost since we will download it again from the merchants website. Pragmatically, we could consider that our server is a simple image cache server.
– Manu Eidenberger
May 12 '11 at 21:17
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How does git compute file hashes?
...object is hashed. I am not certain of the algorithm and parameters however from my observation it probably computes a hash based on all the blobs and trees (their hashes probably) it contains
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In C# what is the difference between a destructor and a Finalize method in a class?
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At least from working with Mono, C# is actually modeled after C++, and most native C# objects are C++ objects. The way the compiler that compiled Mono works dictates how those C++ objects are destructed, and likewise, how C# object f...
How to specify function types for void (not Void) methods in Java8?
...as parameters, bound them to variable references and return them as values from other methods, then they pretty much serve a similar purpose.
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Is there a way to pass optional parameters to a function?
... the parameter. If the parameter has a non-default value, you know it came from the caller.
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Is it possible to make a type only movable and not copyable?
...eating a new allocation, and then semantically copying each stored element from the old to the new. These can be deep copies (e.g. Vec<T>) or shallow (e.g. Rc<T> doesn't touch the stored T), Clone is loosely defined as the smallest amount of work required to semantically copy a value of ...