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Simple proof that GUID is not unique [closed]
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@ErocM; See "Brane cosmology" (en.wikipedia.org/wiki/Brane_cosmology) and "Membrane (M-Theory)" (en.wikipedia.org/wiki/Membrane_(M-Theory)). The idea is if two branes touch a new universe is created. Therefore, you can infer that if two GUIDs touch, a new universe is thus created.
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How do I create a foreign key in SQL Server?
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create table question_bank
(
question_id uniqueidentifier primary key,
question_exam_id uniqueidentifier not null,
question_text varchar(1024) not null,
question_point_value decimal,
constraint fk_questionbank_exams foreign ke...
What is the difference between C, C99, ANSI C and GNU C?
...ain (ISO 9899:2011). This version is called C11. Various new features like _Generic, _Static_assert and thread support were added to the language. The update had a lot of focus on multi-core, multi-processing and expression sequencing. From 2011-2017, this was "the C language".
In 2017, C11 was rev...
What are the downsides to using Dependency Injection? [closed]
...n ivory tower builder.
Relevant Links
http://thedailywtf.com/Articles/The_Inner-Platform_Effect.aspx
http://www.joelonsoftware.com/articles/fog0000000018.html
Probably the simplest form of dependency injection (don't laugh) is a parameter. The dependent code is dependent on data, and that data...
Process escape sequences in a string in Python
...ode the string.
>>> myString = "spam\\neggs"
>>> decoded_string = bytes(myString, "utf-8").decode("unicode_escape") # python3
>>> decoded_string = myString.decode('string_escape') # python2
>>> print(decoded_string)
spam
eggs
Don't use the AST or eval. Using t...
Rails find_or_create_by more than one attribute?
There is a handy dynamic attribute in active-record called find_or_create_by:
5 Answers
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How to unpack and pack pkg file?
...nstalled this pkg nothing happend. In console I got this message: posix_spawn("/Library/Application Support/Project1/Project1.app/Contents/MacOS/Project1", ...): No such file or directory. I have investigated that old Payload file has /./Project1.app/... and new payload has /Project1.app/... in...
How to remove a directory from git repository?
...e directory and recommit it to the .git repo?
– alpha_989
Jan 21 '18 at 18:15
1
Great! Working!
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MySQL Error 1215: Cannot add foreign key constraint
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I'm guessing that Clients.Case_Number and/or Staff.Emp_ID are not exactly the same data type as Clients_has_Staff.Clients_Case_Number and Clients_has_Staff.Staff_Emp_ID.
Perhaps the columns in the parent tables are INT UNSIGNED?
They need to be exactly ...
Rendering JSON in controller
...ting your own dogfood and doing both
In both cases render :json => some_data will JSON-ify the provided data. The :callback key in the second example needs a bit more explaining (see below), but it is another variation on the same idea (returning data in a way that JavaScript can easily handle....