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When to use an interface instead of an abstract class and vice versa?
... bool compare(object lhs, object rhs);
}
class QuickSorter
{
private readonly IComparator comparator;
public QuickSorter(IComparator comparator)
{
this.comparator = comparator;
}
public void Sort(object[] items)
{
// usual code but call comparator.Compare()...
Intercept page exit event
...tListener isn't supported in IE8. Don't edit people's answers without even reading the question.
– Eli Grey
Jan 14 '17 at 10:37
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Why does Internet Explorer not send HTTP post body on Ajax call after failure?
... provides a hotfix. For later browsers such as IE8 it says the hotfix is already included but needs to be enabled through the registry settings on the client PC.
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What's the difference between findAndModify and update in MongoDB?
...m first and then updates it. But why do I need to return the item first? I read the MongoDB: the definitive guide and it says that it is handy for manipulating queues and performing other operations that need get-and-set style atomicity. But I didn't understand how it achieves this. Can somebody e...
Converting between strings and ArrayBuffers
...o be able to write the contents of an ArrayBuffer to localStorage and to read it back.
23 Answers
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Using {} in a case statement. Why?
...ROR
return a * x;
}
You will get a compiler error because x is already defined in the scope.
Separating these to their own sub-scope will eliminate the need to declare x outside the switch statement.
switch (a)
{
case 42: {
int x = GetSomeValue();
return a * x;
}...
Can a decorator of an instance method access the class?
... Anyone trying to use this with staticmethod or classmethod will want to read this PEP: python.org/dev/peps/pep-0232 Not sure it's possible because you can't set an attribute on a class/static method and I think they gobble up any custom function attributes when they are applied to a function.
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What is the difference between the HashMap and Map objects in Java?
...hich includes the Map interface).
It will probably make more sense if you read Sun's interface tutorial
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Give all the permissions to a user on a DB
... on schema test to userA; but after that userA still doesnt have access to read from the tables on schema test
– Diego
Mar 21 '14 at 9:32
2
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Differences between “java -cp” and “java -jar”?
...y ignored...). So with the second version you'd have to look into the jar, read the manifest and try to find out if the classpath entries are valid from where the jar is stored... That's avoidable.
I don't expect any performance advantages or disadvantages for either version. It's just telling the ...