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What is ModelState.IsValid valid for in ASP.NET MVC in NerdDinner?
...le if property names have been changed, migrations have not been performed and as a result the SaveChanges(); fails and cannot occur due to the change.
– Oracular Man
Feb 25 '18 at 18:46
...
How can I set NODE_ENV=production on Windows?
...tained), use
set NODE_ENV=production
This should be executed in the command prompt where you intend to run your Node.js application.
The above line would set the environment variable NODE_ENV for the command prompt where you execute the command.
To set environment variables globally so they per...
Practical uses for AtomicInteger
I sort of understand that AtomicInteger and other Atomic variables allow concurrent accesses. In what cases is this class typically used though?
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SQL select only rows with max value on a column [duplicate]
...ou join your table to the sub-query with equality on both group-identifier and max-value-in-group:
SELECT a.id, a.rev, a.contents
FROM YourTable a
INNER JOIN (
SELECT id, MAX(rev) rev
FROM YourTable
GROUP BY id
) b ON a.id = b.id AND a.rev = b.rev
Left Joining with self, tweaking join...
ValueError : I/O operation on closed file
Here, p is a dictionary, w and c both are strings.
2 Answers
2
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Why can't I forward-declare a class in a namespace using double colons?
...viously declared) entities. They can't be used to introduce new entities.
And you are in fact "reopening" the namespace to declare new entities. If the class Class is later defined as a member of different namespace - it is a completely different class that has nothing to do with the one you declar...
What does [object Object] mean?
I am trying to alert a returned value from a function and I get this in the alert:
9 Answers
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How do you Force Garbage Collection from the Shell?
So I am looking at a heap with jmap on a remote box and I want to force garbage collection on it. How do you do this without popping into jvisualvm or jconsole and friends?
...
Automating the InvokeRequired code pattern
...{
control.Invoke(action);
} else {
action();
}
}
And can be called like this
richEditControl1.InvokeIfRequired(() =>
{
// Do anything you want with the control here
richEditControl1.RtfText = value;
RtfHelpers.AddMissingStyles(richEditControl1);
});
There ...
Implementing IDisposable correctly
...nalizer when doing garbage collection (in case Dispose was not called yet) and properly free unmanaged resources.
– mariozski
May 17 '16 at 22:38
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