大约有 4,200 项符合查询结果（耗时：0.0354秒） [XML]
When & why to use delegates? [duplicate]
...efining a delegate, you are saying to the user of your class, "Please feel free to assign, any method that matches this signature, to the delegate and it will be called each time my delegate is called".
Typical use is of course events. All the OnEventX delegate to the methods the user defines.
Del...
Can anyone explain IEnumerable and IEnumerator to me? [closed]
... the long road and
implement each method manually. While you are certainly free to provide customized versions of
GetEnumerator(), MoveNext(), Current, and Reset(), there is a simpler way. As the System.Array type (as well as many other collection classes) already implements IEnumerable and IEnumera...
When should I use mmap for file access?
...dress space becomes fragmented, where you might have 2 GB of address space free, but no individual range of it can fit a 1 GB file mapping. In this case you may have to map the file in smaller chunks than you would like to make it fit.
Another potential awkwardness with mmap as a replacement for r...
Is it possible to have a Subversion repository as a Git submodule?
... tools like git-svn or any other.
SubGit is proprietary software but it's free for small companies (up to 10 committers), academic and open-source projects.
SmartGit
SmartGit replaces git-svn on client-side. More information on its features you may find here.
In particular SmartGit does support...
What is an efficient way to implement a singleton pattern in Java? [closed]
..., except that it is more concise, provides the serialization machinery for free, and provides an ironclad guarantee against multiple instantiation, even in the face of sophisticated serialization or reflection attacks. While this approach has yet to be widely adopted, a single-element enum type is t...
What is the difference between exit() and abort()?
...though when the application is completely closed the operating system will free up any unfreed memory and other resources.
In both abort and exit program termination (assuming you didn't override the default behavior), the return code will be returned to the parent process that started your applic...
How does a language expand itself? [closed]
...ns which may perform some useful function within one's own program. One is free to call the system calls directly (using assembler) but it is probably easier to just make use of one of the wrapper functions that the platform supplies.
There is another level of API that are a lot more useful than a ...
Move assignment operator and `if (this != &rhs)`
...; }
A swappable type that needs customization should have a two-argument free function called swap in the same namespace as the type. (The namespace restriction lets unqualified calls to swap to work.) A container type should also add a public swap member function to match the standard container...
Why is IoC / DI not common in Python?
... the module system works in Python. You can get a sort of "singleton" for free, just by importing it from a module. Define an actual instance of an object in a module, and then any client code can import it and actually get a working, fully constructed / populated object.
This is in contrast to J...
How to find all serial devices (ttyS, ttyUSB, ..) on Linux without opening them?
...gister_comport(comList, comList8250, devicedir);
}
free(namelist[n]);
}
free(namelist);
}
// Only non-serial8250 has been added to comList without any further testing
// serial8250-devices must be probe to check for validity
probe_serial8250_c...