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Why are mutable structs “evil”?
... any other copies which might be around.
If your struct is immutable then all automatic copies resulting from being passed by value will be the same.
If you want to change it you have to consciously do it by creating a new instance of the struct with the modified data. (not a copy)
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Why / when would it be appropriate to override ToString?
...way? Yes.
But by using ToString you are using a method that is common to all objects and thus other classes know about this method. For instance, whenever the .NET framework wants to convert an object to a string representation, ToString is a prime candidate (there are others, if you want to provi...
Service vs IntentService in the Android platform
...use threads within Service.
The IntentService can be used in long tasks usually with no communication to Main Thread. If communication is required, can use Main Thread handler or broadcast intents. Another case of use is when callbacks are needed (Intent triggered tasks).
How to trigger?
The Se...
The requested operation cannot be performed on a file with a user-mapped section open
...piled in the Debug folder... Strange, isn't it?
I found out using a tool called Unlocker.
Had to delete with Unlocker, even when it was saying that there was no lock over the file, and I couldn't delete the folder until I didn't delete that single file...
After that it compiled.
EDIT:
I found o...
Automatic text translation at MSDN pages - How to turn off?
...addon. Create a new redirect and set it up like this:
It will automatically redirect all msdn requests to english non-translated versions.
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Abstract classes in Swift Language
... importantly, notice that there is no dynamic dispatch. When logSalary is called on the instance that is stored as a SoftwareEngineer it calls the overridden version of the method. When logSalary is called on the instance after it has been cast to an Employee, it calls the original implementation (i...
System.MissingMethodException: Method not found?
...a library, that depends on a library, etc. Then make sure to Clean/Rebuild all of the dependent libraries with the same version of whichever dll, NHibernate in my case...
– Serj Sagan
Sep 19 '13 at 20:47
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How does the getView() method work when creating your own custom adapter?
...ided so you can inflate your view into that for proper layout parameters.
All these together can be used to effectively create the view that will appear in your list (or other view that takes an adapter):
public View getView(int position, @Nullable View convertView, ViewGroup parent){
if (conv...
annotation to make a private method public only for test classes [duplicate]
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If you use FindBugs, I've built a plugin that can actually verify for you that @VisibleForTesting methods are not being used outside test classes.
– Johnco
Jul 23 '15 at 14:40
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static allocation in java - heap, stack and permanent generation
I have been lately reading a lot on memory allocation schemes in java, and there have been many doubts as I have been reading from various sources. I have collected my concepts, and I would request to go through all of the points and comment on them. I came to know that memory allocation is JVM spec...