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entity object cannot be referenced by multiple instances of IEntityChangeTracker. while adding relat
...he context in EmployeeService. As a result you have city1 attached to two different context which is what the exception complains about.
You can fix this by creating a context outside of the service classes and injecting and using it in both services:
EmployeeService es = new EmployeeService(conte...
Visual Studio refuses to forget breakpoints?
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go to Debug menu then Delete All Breakpoints Ctrl+Shift+F9
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How to hash a string into 8 digits?
... int(hashlib.sha256(s.encode('utf-8')).hexdigest(), 16) % 10**8
80262417
If you want to use the hash() function instead, the important caveat is that, unlike in Python 2.x, in Python 3.x, the result of hash() will only be consistent within a process, not across python invocations. See here:
$ pyt...
SQL set values of one column equal to values of another column in the same table
...s a function that returns its first non-null argument.
In this example, if B on a given row is not null, the update is a no-op.
If B is null, the COALESCE skips it and uses A instead.
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How to make div background color transparent in CSS
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@Subir if you need another way, see Jerska's answer. But as said, it seems questionable why you want to avoid opacity in the first place.
– Pekka
Aug 4 '12 at 9:07
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Is there a built-in function to print all the current properties and values of an object?
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You are really mixing together two different things.
Use dir(), vars() or the inspect module to get what you are interested in (I use __builtins__ as an example; you can use any object instead).
>>> l = dir(__builtins__)
>>> d = __builtins__...
One or more types required to compile a dynamic expression cannot be found. Are you missing referenc
...dio and reopening the project fixed it more long-term, so that's an option if this situation occurs while Microsoft.CSharp is already referenced.
Maybe restarting the IDE as a first step seems trivial, but here's a reminder for people like me who don't think of that as the first thing to do.
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Purpose of buildscript block in Gradle
...cript block, you can use everything that ships with Gradle out-of-the-box. If you additionally want to use third-party plugins, task classes, or other classes (in the build script!), you have to specify the corresponding dependencies in the buildScript block.
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Difference between constituency parser and dependency parser
What is the difference between a constituency parser and a dependency parser ? What are the different usages of the two?
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Best way to write to the console in PowerShell
...ch exists for the sole reason of outputting text in the host application.
If you want output, then use the Write-* cmdlets. If you want return values from a function, then just dump the objects there without any cmdlet.
sha...