大约有 44,500 项符合查询结果（耗时：0.0375秒） [XML]
Efficient way to return a std::vector in c++
...hen returning a std::vector in a function and how big an optimization will it be to place the std::vector in free-store (on the heap) and return a pointer instead i.e. is:
...
In MVVM should the ViewModel or Model implement INotifyPropertyChanged?
...h have had the Model implement INotifyPropertyChanged , but in Josh Smith's CommandSink example the ViewModel implements INotifyPropertyChanged .
...
How to perform .Max() on a property of all objects in a collection and return the object with maximu
... this in MoreLINQ. You can look at the implementation there, but basically it's a case of iterating through the data, remembering the maximum element we've seen so far and the maximum value it produced under the projection.
In your case you'd do something like:
var item = items.MaxBy(x => x.Hei...
Why aren't superclass __init__ methods automatically invoked?
Why did the Python designers decide that subclasses' __init__() methods don't automatically call the __init__() methods of their superclasses, as in some other languages? Is the Pythonic and recommended idiom really like the following?
...
Method chaining - why is it a good practice, or not?
Method chaining is the practice of object methods returning the object itself in order for the result to be called for another method. Like this:
...
What is the difference between a var and val definition in Scala?
What is the difference between a var and val definition in Scala and why does the language need both? Why would you choose a val over a var and vice versa?
...
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo
...
It is a problem of your Intent.
Please add your Activity in your AndroidManifest.xml.
When you want to make a new activity, you should register it in your AndroidManifest.xml.
...
Testing if object is of generic type in C#
...erform a test if an object is of a generic type. I've tried the following without success:
5 Answers
...
Benefit of using Parcelable instead of serializing object
...le and Parcelable belongs to the way Android performs serialization in. It is used for example in passing data between activities. But I wonder, if there are any benefits in using Parcelable instead of classic serialization in case of saving state of my business objects to the internal memory f...
UDP vs TCP, how much faster is it? [closed]
...
UDP is faster than TCP, and the simple reason is because its non-existent acknowledge packet (ACK) that permits a continuous packet stream, instead of TCP that acknowledges a set of packets, calculated by using the TCP window size and round-trip time (RTT).
For more information, I...