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Should we pass a shared_ptr by reference or by value?
... but as shown here it is cheaper to pass by value: stackoverflow.com/a/12002668/128384 shouldn't that be taken into account as well (at least for constructor arguments etc where a the shared_ptr is going to be made a member of the class)?
– stijn
Jan ...
Why can't a text column have a default value in MySQL?
...lue" returns about 2,940 results on Google. Most of them are reports of incompatibilities when trying to install DB scripts that worked on one system but not others.
I am running into the same problem now on a webapp I'm modifying for one of my clients, originally deployed on Linux MySQL v5.0.83-l...
Difference in make_shared and normal shared_ptr in C++
...t;("bar"));
Update II: Disadvantage of std::make_shared
Quoting Casey's comments:
Since there there's only one allocation, the pointee's memory cannot be deallocated until the control block is no longer in use. A weak_ptr can keep the control block alive indefinitely.
Why do instances of we...
Error when testing on iOS simulator: Couldn't register with the bootstrap server
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Try quitting and restarting the simulator? If "worse comes to worst" you can always try restarting: in my experience this should fix it.
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UIDevice uniqueIdentifier deprecated - What to do now?
It has just come to light that the UIDevice uniqueIdentifier property is deprecated in iOS 5 and unavailable in iOS 7 and above. No alternative method or property appears to be available or forthcoming.
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Does using final for variables in Java improve garbage collection?
...ect referred to by a live object is also marked as being alive.
After the completion of the mark phase, the GC sweeps through the heap, freeing memory for all unmarked objects (and compacting the memory for the remaining live objects).
Also, it's important to recognize that the Java heap memory is...
Using Linq to get the last N elements of a collection?
...ch preserves item order without a dependency on any sorting, and has broad compatibility across several LINQ providers.
It is important to take care not to call Skip with a negative number. Some providers, such as the Entity Framework, will produce an ArgumentException when presented with a negativ...
Test iOS app on device without apple developer program or jailbreak
...e (and you certainly no longer have to jailbreak your device if you're not comfortable doing so).
Well, not for the majority of use cases anyway. For obvious reasons, certain capabilities and entitlements that require Program membership such as Game Center and in-app purchases will not be available ...
What is the difference between 'E', 'T', and '?' for Java generics?
I come across Java code like this:
6 Answers
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Why would a JavaScript variable start with a dollar sign? [duplicate]
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Very common use in jQuery is to distinguish jQuery objects stored in variables from other variables.
For example, I would define:
var $email = $("#email"); // refers to the jQuery object representation of the dom object
var em...