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MySQL stored procedure vs function, which would I use when?
...s:
A procedure does not return a value. Instead, it is invoked with a CALL statement to perform an operation such as modifying a table or processing retrieved records.
A function is invoked within an expression and returns a single value directly to the caller to be used in the expression.
You c...
throwing exceptions out of a destructor
...f an element destructor throws, the vector destruction fails... There is really no good way to protect against exceptions thrown from destructors, so the library makes no guarantees if an element destructor throws" (from Appendix E3.2) .
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Does every Core Data Relationship have to have an Inverse?
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An inverse relationship doesn't just
make things more tidy, it's actually
used by Core Data to maintain data
integrity.
-- Cocoa Dev Central
You should typically model
relationships in both directions, and
specify the inverse relationships
appropriately. Core Data uses this
i...
junit & java : testing non-public methods [duplicate]
...e methods you want to test as public, and having those overridden methods call the original methods with the super keyword. Typically, this "testing subclass" would be an inner class in the JUnit TestCase class doing the testing. This is a little bit more hacky, in my opinion, but I've done it.
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When to use ref and when it is not necessary in C#
...or C++. Changes to the value of the parameter itself won't be seen by the caller, but changes in the object which the reference points to will be seen.
When a parameter (of any kind) is passed by reference, that means that any changes to the parameter are seen by the caller - changes to the paramet...
Why does the C# compiler not fault code where a static method calls an instance method?
The following code has a static method, Foo() , calling an instance method, Bar() :
3 Answers
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Complex numbers usage in python [closed]
...suffix comes from electrical engineering, where the variable ‘i’ is usually used for current. (Reasoning found here.)
The type of a complex number is complex, and you can use the type as a constructor if you prefer:
>>> complex(2,3)
(2+3j)
A complex number has some built-in accesso...
SQL NVARCHAR and VARCHAR Limits
All, I have a large (unavoidable) dynamic SQL query. Due to the number of fields in the selection criteria the string containing the dynamic SQL is growing over 4000 chars. Now, I understand that there is a 4000 max set for NVARCHAR(MAX) , but looking at the executed SQL in Server Profiler for the ...
How to create a generic array in Java?
...tly what type of objects it contains (i.e. its constructor was explicitly called with a Class<E> argument, and methods will throw an exception when they are passed arguments that are not of type E. See Collections.checkedCollection.
-> in that case, you should write:
public class GenSet&l...
How do I get the current GPS location programmatically in Android?
I need to get my current location using GPS programmatically.
How can i achieve it?
23 Answers
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