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Arrays, heap and stack and value types
...lled to point out that with the exception of your latter two cases, the so-called "locals" cease to be locals at compile time. The implementation raises them to the status of class members, which is the only reason they get stored on the heap. So it's merely an implementation detail (snicker). Of...
'and' (boolean) vs '&' (bitwise) - Why difference in behavior with lists vs numpy arrays?
...
and tests whether both expressions are logically True while & (when used with True/False values) tests if both are True.
In Python, empty built-in objects are typically treated as logically False while non-empty built-ins are logically True. This facilitates the ...
What does “var FOO = FOO || {}” (assign a variable or an empty object to that variable) mean in Java
...
var AEROTWIST = AEROTWIST || {};
Basically this line is saying set the AEROTWIST variable to the value of the AEROTWIST variable, or set it to an empty object.
The double pipe || is an OR statement, and the second part of the OR is only executed if the first pa...
The communication object, System.ServiceModel.Channels.ServiceChannel, cannot be used for communicat
...erChannel.State != System.ServiceModel.CommunicationState.Faulted)
{
// call service - everything's fine
}
else
{
// channel faulted - re-create your client and then try again
}
If it is, all you can do is dispose of it and re-create the client side proxy again and then try again
...
JPA and Hibernate - Criteria vs. JPQL or HQL
... dynamic queries. For example it is much easier to add some ordering dynamically or leave some parts (e.g. restrictions) out depending on some parameter.
On the other hand I'm using HQL for static and complex queries, because it's much easier to understand/read HQL. Also, HQL is a bit more powerfu...
Java's final vs. C++'s const
...
In C++ marking a member function const means it may be called on const instances. Java does not have an equivalent to this. E.g.:
class Foo {
public:
void bar();
void foo() const;
};
void test(const Foo& i) {
i.foo(); //fine
i.bar(); //error
}
Values can be ...
java.net.SocketException: Connection reset
...y ServerSocket and close its connection without sending anything is.read() calls itself recursively.It seems because of being in an infinite while loop for reading from this socket you try to read from a closed connection.
If you use something like below for read operation;
while(true)
{
Receive...
Why must jUnit's fixtureSetup be static?
...ods. Otherwise, on which of the test class instances should the methods be called? If it would be possible for the @BeforeClass/@AfterClass methods to reference instance variables, then only one of the @Test methods would have access to those same instance variables - the rest would have the instanc...
How to handle both a single item and an array for the same property using JSON.net
...te override or change it to return true, or else WriteJson() will never be called.)
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
List<T> list = (List<T>)value;
if (list.Count == 1)
{
value = list...
iPhone app in landscape mode, 2008 systems
... UIInterfaceOrientationLandscapeRight animated:NO];
You may also have to call window makeKeyAndVisible; first.
A few links: Developing in landscape mode, iPhone SDK: How to force Landscape mode only?
@Robert: please refer to The iPhone SDK, NDA, and Stack Overflow.
...