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Why do I need to override the equals and hashCode methods in Java?
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Joshua Bloch says on Effective Java
You must override hashCode() in every class that overrides equals(). Failure to do so will result in a violation of the general contract for Object.hashCode(), which will prevent your class from ...
How to change maven logging level to display only warning and errors?
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Answering your question
I made a small investigation because I am also interested in the solution.
Maven command line verbosity options
According to http://books.sonatype.com/mvnref-book/reference/running-sect-options.html#running-sect-verbose-option
-e for error
-X for debug
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How to create a self-signed certificate with OpenSSL
I'm adding HTTPS support to an embedded Linux device. I have tried to generate a self-signed certificate with these steps:
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What is the string length of a GUID?
...lumn in SQL that should contain N'guid' while guid is a generated GUID by .NET ( Guid.NewGuid ) - class System.Guid.
7 ...
Mongoose (mongodb) batch insert?
Does Mongoose v3.6+ support batch inserts now? I've searched for a few minutes but anything matching this query is a couple of years old and the answer was an unequivocal no.
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Calling C++ class methods via a function pointer
How do I obtain a function pointer for a class member function, and later call that member function with a specific object? I’d like to write:
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iPhone hide Navigation Bar only on first page
I have the code below that hides and shows the navigational bar. It is hidden when the first view loads and then hidden when the "children" get called. Trouble is that I cannot find the event/action to trigger it to hide again when they get back to the root view....
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How to declare an array in Python?
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variable = []
Now variable refers to an empty list*.
Of course this is an assignment, not a declaration. There's no way to say in Python "this variable should never refer to anything other than a list", since Python is dynamica...
How does a hash table work?
I'm looking for an explanation of how a hash table works - in plain English for a simpleton like me!
15 Answers
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How to avoid scientific notation for large numbers in JavaScript?
JavaScript converts a large INT to scientific notation when the number becomes large. How can I prevent this from happening?
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