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What does LINQ return when the results are empty
...t actually be wrong. If using linq to entities, the db might shortcut this and no data at all is being sent to the client except a true or false
– Mafii
Aug 15 '16 at 13:28
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Applications are expected to have a root view controller at the end of application launch
... Another option is to make sure the app delegate class is imported in main and use NSStringFromClass. That's how Xcode now creates the main.m file. For example: #import "AppDelegate.h and then int retVal = UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
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M_PI works with math.h but not with cmath in Visual Studio
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Interestingly I checked this on an app of mine and I got the same error.
I spent a while checking through headers to see if there was anything undef'ing the _USE_MATH_DEFINES and found nothing.
So I moved the
#define _USE_MATH_DEFINES
#include <cmath>
to be th...
Java List.contains(Object with field value equal to x)
...at has a field with a certain value. Now, I could use a loop to go through and check, but I was curious if there was anything more code efficient.
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@try - catch block in Objective-C
...n_throw from my breakpoints solved this. Now it's caught by the @try block and also, NSSetUncaughtExceptionHandler will handle this if a @try block is missing.
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How to close a Java Swing application from the code
What is the proper way to terminate a Swing application from the code, and what are the pitfalls?
9 Answers
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How to do an instanceof check with Scala(Test)
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Not sure if I understand correctly, but it should be the same: isInstanceOf[TraitName].
– agilesteel
Dec 29 '17 at 12:13
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What's the difference between the 'ref' and 'out' keywords?
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The ref modifier means that:
The value is already set and
The method can read and modify it.
The out modifier means that:
The Value isn't set and can't be read by the method until it is set.
The method must set it before returning.
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Entity Framework: How to disable lazy loading for specific query?
... is more effective to guarantee that all data needed is fetched in advance and avoids creating hidden performance bottlenecks.
– Doug
Oct 15 '18 at 17:27
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What is the difference between is_a and instanceof?
I am aware that instanceof is an operator and that is_a is a method.
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