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What is the difference between Views and Materialized Views in Oracle?
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Also when you need performance on data that don't need to be up to date to the very second, materialized views are better, but your data will be older than in a standard view. Usually BI reports gain a lot of benefit from materialized views.
...
Inconsistent Accessibility: Parameter type is less accessible than method
...bject (a reference to the currently logged on user, basically) between two forms. At the moment, I have something along these lines in the login form:
...
Clang optimization levels
...xchange.using('gps', function() { StackExchange.gps.track('embedded_signup_form.view', { location: 'question_page' }); });
$window.unbind('scroll', onScroll);
}
};
...
Java logical operator short-circuiting
...lse when A is false, no matter what B is. If you use the || and && forms, rather than the | and & forms of these operators, Java will not bother to evaluate the right-hand operand alone. This is very useful when the right-hand operand depends on the left one being true or false in order ...
Finding the handle to a WPF window
Windows forms had a property win1.Handle which, if I recall, returns the handle of the main window handle?
4 Answers
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Difference between setTimeout with and without quotes and parentheses
...first argument for setTimeout or setInterval. This reference may be in the form of:
An anonymous function
setTimeout(function(){/* Look mah! No name! */},2000);
A name of an existing function
function foo(){...}
setTimeout(foo, 2000);
A variable that points to an existing function
var foo =...
Invoke(Delegate)
...swer to this question lies in how C# Controls work
Controls in Windows Forms are bound to a specific thread and are not
thread safe. Therefore, if you are calling a control's method from a
different thread, you must use one of the control's invoke methods to
marshal the call to the proper ...
Wait 5 seconds before executing next line
...art + ms) {
end = new Date().getTime();
}
}
With execution in the form:
console.log('before');
wait(7000); //7 seconds in milliseconds
console.log('after');
I've arrived here because I was building a simple test case for sequencing a mix of asynchronous operations around long-running bl...
The case against checked exceptions
...pty())
and it will be painful to have to wrap in try/catch every time.
Informing the User:
Checked exceptions should be used in cases where you can imagine a useful error message being presented to the end user.
This is the "and what will you do when it happens?" question I raised above. It also...
What is the explanation for these bizarre JavaScript behaviours mentioned in the 'Wat' talk for Code
...cript.
The basic idea was simple JavaScript wanted to allow both of these forms:
if (u)
v;
if (x) {
y;
z;
}
To do so, two interpretations were made of the opening brace: 1. it is not required and 2. it can appear anywhere.
This was a wrong move. Real code doesn't have an opening br...