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Where do I find some good examples for DDD? [closed]
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I know this is old, but the example from dddps appears to be fully anemic and counter to OOP actually. None of the domain objects have any behavior, and the service layer classes are basically a 1:1 delegation to the repositorie...
How to swap keys and values in a hash
... out[value] << key
end
end
end
Note: This code with tests is now on GitHub.
Or:
class Hash
def safe_invert
self.each_with_object({}){|(k,v),o|(o[v]||=[])<<k}
end
end
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C++ Double Address Operator? (&&)
...meter of a function. And it only takes a r-value expression. If you don't know what an r-value is, the simple explanation is that it doesn't have a memory address. E.g. the number 6, and character 'v' are both r-values. int a, a is an l-value, however (a+2) is an r-value. For example:
void foo(int&...
How do I get the YouTube video ID from a URL?
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Did you know that it's not really perfect, if you put anything.com/watch?v=jn40gqhxoSY It think it's a youtube url
– Gino
Oct 1 '17 at 19:59
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What are the Android SDK build-tools, platform-tools and tools? And which version should be used?
I know this is a very rudimentary question, but to my surprise, I could not find any document about Android SDK Build-tools.
Besides Android SDK Tools and Android SDK Platform-tools, there are a bunch of Android SDK Build-tools as shown in the appended screenshot. Could anyone point to a source expl...
What's the difference between TRUNCATE and DELETE in SQL
...ledBack in SQL SERVER. And in the 2nd row DELETE dose not reset identity. Now how can you edit this post? That's the bad thing about using pictures in StackOverflow.
– Mahmood Jenami
Aug 3 '16 at 8:05
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Difference between std::result_of and decltype
...f a deduction failure. That has been corrected in C++14: std::result_of is now required to be SFINAE-friendly (thanks to this paper).
So on a conforming C++14 compiler, std::result_of_t<F(Args...)> is strictly superior. It's clearer, shorter, and correctly† supports more Fs‡ .
†Unless...
Brew doctor says: “Warning: /usr/local/include isn't writable.”
...ash_profile, add:
alias fix_brew='sudo chown -R $USER /usr/local/'
And now inside your terminal you can run:
$ fix_brew
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i
How to get ER model of database from server with Workbench
...e tab
click reverse engineer
follow the wizard Next > Next ….
DONE :)
now you can click the arrange tab then choose auto-layout (keep clicking it until you are satisfied with the result)
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SqlAlchemy - Filtering by Relationship Attribute
...ives you filtering/sorting with "magical" strings as in Django, so you can now write something like
Patient.where(mother___phenoscore=10)
It's a lot shorter, especially for complex filters, say,
Comment.where(post___public=True, post___user___name__like='Bi%')
Hope you will enjoy this package
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