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MySQL: Insert record if not exists in table
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Thanks that helped. My actual problem is far more complex and the column just cannot be unique and I cannot depend on the primary key. But this is exactly what I was looking for.
– Rupert
Jul 2 '10 at 10:41
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Determine if variable is defined in Python [duplicate]
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This debate is much more interesting that the answer itself, which by the way is 100% correct and let you handle poor legacy code elegantly.
– e-satis
Mar 31 '10 at 13:46
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AutoMapper: “Ignore the rest”?
...on the destination. Not sure if it will still be useful as the question is more than two years old, but I ran into the same issue having to add a lot of manual Ignore calls.
public static IMappingExpression<TSource, TDestination> IgnoreAllNonExisting<TSource, TDestination>
(this IMappin...
How can I recover the return value of a function passed to multiprocessing.Process?
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How to make an AJAX call without jQuery?
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Why do we need message brokers like RabbitMQ over a database like PostgreSQL?
...e different routing algorithms, to name a couple(rabbit provides these and more). Depending on the size of your project, you may also want the message passing component separate from your database, so that if one component experiences heavy load, it need not hinder the other's operation.
As for the...
Which is the fastest algorithm to find prime numbers?
...mentation of the Sieve of Atkin is Dan Bernstein's primegen. This sieve is more efficient than the Sieve of Eratosthenes. His page has some benchmark information.
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Android: Clear the back stack
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I also added one more clear Intent intent = new Intent(SingUpActivity.this, LoginActivity.class); intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP); ...
Why do we use arrays instead of other data structures?
... up time (The look up cost increases as each element is added). It is much more expensive to get to P1000 compared to getting to P4.
Higher level data structures, such as hashtables, stacks and queues, all may use an array (or multiple arrays) internally, while Linked Lists and Binary Trees usually...