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equals vs Arrays.equals in Java
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array1.equals(array2) is the same as array1 == array2, i.e. is it the same array. As @alf points out it's not what most people expect.
Arrays.equals(array1, array2) compares the contents of the arrays.
Similarly array.toString() may not be very useful and you need to use Arrays.toStr...
Why does ReSharper want to use 'var' for everything?
I've just started using ReSharper with Visual Studio (after the many recommendations on SO). To try it out I opened up a recent ASP.NET MVC project. One of the first and most frequent things I've noticed it suggesting is to change most/all my explicit declarations to var instead. For example:
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Clone() vs Copy constructor- which is recommended in java [duplicate]
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Clone is broken, so dont use it.
THE CLONE METHOD of the Object class
is a somewhat magical method that does
what no pure Java method could ever
do: It produces an identical copy of
its object. It has been present in the
primordial Object s...
lexers vs parsers
...input.
Hint: The alphabet doesn't necessarily have to be of letters. But it
has to be of symbols which are atomic for the language
understood by parser/lexer.
Symbols for the lexer: ASCII characters.
Symbols for the parser: the particular tokens, which are terminal symbols of their grammar.
They ...
What exactly are unmanaged resources?
...nmanaged resources correctly, the garbage collector will eventually handle it for you when the object containing that resource is garbage collected (this is "finalization"). But because the garbage collector doesn't know about the unmanaged resources, it can't tell how badly it needs to release them...
What is polymorphism, what is it for, and how is it used?
What is polymorphism, what is it for, and how is it used?
28 Answers
28
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Why is exception handling bad?
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Exceptions make it really easy to write code where an exception being thrown will break invariants and leave objects in an inconsistent state. They essentially force you to remember that most every statement you make can potentially throw, ...
What does Maven do, in theory and in practice? When is it worth to use it? [closed]
... for practice. I've read about Maven, but I don't actually understand when it is meant to be used.
3 Answers
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How do you use the ? : (conditional) operator in JavaScript?
Can someone please explain to me in simple words what is the ?: (conditional, "ternary") operator and how to use it?
18 ...
Why does the is operator return false when given null?
It seems to me that the is operator is a bit inconsistent.
7 Answers
7
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