大约有 43,000 项符合查询结果（耗时：0.0377秒） [XML]
Why can't I initialize non-const static member or static array in class?
...
Why I can't initialize static data members in class?
The C++ standard allows only static constant integral or enumeration types to be initialized inside the class. This is the reason a is allowed to be initialized while others are not.
Reference:
C++03 9.4.2 Static data members
§4
...
Difference between pre-increment and post-increment in a loop?
Is there a difference in ++i and i++ in a for loop? Is it simply a syntax thing?
22 Answers
...
Difference between java.io.PrintWriter and java.io.BufferedWriter?
...orrectly.
The BufferedReader permits to read a text from file, with bytes converted in characters. It allows to read line by line.
There is no PrintReader, you have to choose another Reader implementation according to the format of your input.
...
How does the main() method work in C?
...es.
Programmers noticed that they can pass extra arguments to a function, and nothing bad happens with their given compiler.
This is the case if the calling conventions are such that:
The calling function cleans up the arguments.
The leftmost arguments are closer to the top of the stack, or to t...
int a[] = {1,2,}; Weird comma allowed. Any particular reason?
...
It makes it easier to generate source code, and also to write code which can be easily extended at a later date. Consider what's required to add an extra entry to:
int a[] = {
1,
2,
3
};
... you have to add the comma to the existing line and add a new line....
Difference between ref and out parameters in .NET [duplicate]
What is the difference between ref and out parameters in .NET? What are the situations where one can be more useful than the other? What would be a code snippet where one can be used and another can't?
...
C# Sort and OrderBy comparison
...0ms
In this scenario it looks like OrderBy performs better.
UPDATE2:
And using random names:
List<Person> persons = new List<Person>();
for (int i = 0; i < 100000; i++)
{
persons.Add(new Person("P" + i.ToString(), RandomString(5, true)));
}
Where:
private static Random r...
Is it possible to for SQL Output clause to return a column not being inserted?
I've made some modifications to my database and I need to migrate the old data to the new tables. For that, I need to fill a table (ReportOptions) taking the data from the original table (Practice), and fill a second intermediate table (PracticeReportOption).
...
Subclassing a Java Builder class
Give this Dr Dobbs article , and the Builder Pattern in particular, how do we handle the case of subclassing a Builder? Taking a cut-down version of the example where we want to subclass to add GMO labelling, a naive implementation would be:
...
What happens to an open file handle on Linux if the pointed file gets moved or deleted
What happens to an open file handle on Linux if the pointed file meanwhile gets:
7 Answers
...