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Difference between EXISTS and IN in SQL?
What is the difference between the EXISTS and IN clause in SQL?
21 Answers
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Retrieving a List from a java.util.stream.Stream in Java 8
...with Java 8 lambdas to easily filter collections. But I did not find a concise way to retrieve the result as a new list within the same statement. Here is my most concise approach so far:
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@Resource vs @Autowired
...ements Foo { .. }
And then:
@Inject @YourQualifier private Foo foo;
This makes less use of String-names, which can be misspelled and are harder to maintain.
As for the original question: both, without specifying any attributes of the annotation, perform injection by type. The difference is:
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Can a foreign key be NULL and/or duplicate?
...remember a Foreign key simply requires that the value in that field must exist first in a different table (the parent table). That is all an FK is by definition. Null by definition is not a value. Null means that we do not yet know what the value is.
Let me give you a real life example. Suppose you...
Can an abstract class have a constructor?
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Yes, an abstract class can have a constructor. Consider this:
abstract class Product {
int multiplyBy;
public Product( int multiplyBy ) {
this.multiplyBy = multiplyBy;
}
public int mutiply(int val) {
return multiplyBy * val;
}
}
class TimesTwo ...
How can I specify a [DllImport] path at runtime?
...he suggestions by some of the other answers, using the DllImport attribute is still the correct approach.
I honestly don't understand why you can't do just like everyone else in the world and specify a relative path to your DLL. Yes, the path in which your application will be installed differs on di...
How does one write code that best utilizes the CPU cache to improve performance?
This could sound like a subjective question, but what I am looking for are specific instances, which you could have encountered related to this.
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Why no ICloneable?
Is there a particular reason why a generic ICloneable<T> does not exist?
9 Answers
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Why does Java's hashCode() in String use 31 as a multiplier?
Per the Java documentation, the hash code for a String object is computed as:
13 Answers
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Object reference not set to an instance of an object.Why doesn't .NET show which object is `null`?
Regarding this .NET unhandled exception message:
5 Answers
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