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Is SQL or even TSQL Turing Complete?
...that can refer to themselves, and thereby recursively solve problems.
The interesting thing to note is that CTE was not really added to turn SQL into a programming language -- just to turn a declarative querying language into a more powerful declarative querying language. Sort of like in C++, whose...
How to pass objects to functions in C++?
...les to determine whether to pass by const reference or not.)
Passing by pointer is virtually never advised. Optional parameters are best expressed as a std::optional (boost::optional for older std libs), and aliasing is done fine by reference.
C++11's move semantics make passing and returning by va...
How to get the index of an item in a list in a single step?
...
How about the List.FindIndex Method:
int index = myList.FindIndex(a => a.Prop == oProp);
This method performs a linear search; therefore, this method is an
O(n) operation, where n is Count.
If the item is not found, it will return -1
...
Creating a favicon [closed]
... have a logo image that you want to transform into a favicon, then you can convert it using http://www.favicomatic.com/.
It creates crisp favicons, and I haven't had to edit them after creating them.
It will generate favicons at 16x16 and 32x32 and to quote them: "Every damn size, sir!". The site a...
What is the difference between a static and a non-static initialization code block
... after the invocation of the super constructor.
If you remove static from int a, it becomes an instance variable, which you are not able to access from the static initializer block. This will fail to compile with the error "non-static variable a cannot be referenced from a static context".
If you ...
Get query from java.sql.PreparedStatement [duplicate]
...plete SQL by just calling PreparedStatement#toString(). I.e.
System.out.println(preparedStatement);
To my experience, the ones which do so are at least the PostgreSQL 8.x and MySQL 5.x JDBC drivers. For the case your JDBC driver doesn't support it, your best bet is using a statement wrapper which...
How to write an async method with out parameter?
...to iterator methods -- i.e.
through the compiler transforming the method into a
state-machine-object. The CLR has no safe way to store the address of
an "out parameter" or "reference parameter" as a field of an object.
The only way to have supported out-by-reference parameters would be if
...
Android TextView with Clickable Links: how to capture clicks?
...nks. I need to capture clicks on the links and open the links -- in my own internal WebView (not in the default browser.)
1...
What is the difference between 'typedef' and 'using' in C++11?
...ef]/2 [extract, emphasis mine]
[dcl.typedef]/2 A
typedef-name
can also be introduced by an
alias-declaration.
The identifier following the using keyword becomes a
typedef-name and the optional attribute-specifier-seq following the identifier appertains to that typedef-name. Such a
typedef-name has ...
Fastest way to reset every value of std::vector to 0
What's the fastest way to reset every value of a std::vector<int> to 0 and keeping the vectors initial size ?
6 An...