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Avoiding instanceof in Java
Having a chain of "instanceof" operations is considered a "code smell". The standard answer is "use polymorphism". How would I do it in this case?
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How to print struct variables in console?
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Flatten nested dictionaries, compressing keys
Suppose you have a dictionary like:
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How do I determine whether an array contains a particular value in Java?
I have a String[] with values like so:
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No Multiline Lambda in Python: Why not?
I've heard it said that multiline lambdas can't be added in Python because they would clash syntactically with the other syntax constructs in Python. I was thinking about this on the bus today and realized I couldn't think of a single Python construct that multiline lambdas clash with. Given that ...
Select the values of one property on all objects of an array in PowerShell
Let's say we have an array of objects $objects. Let's say these objects have a "Name" property.
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What would cause an algorithm to have O(log n) complexity?
...O is limited, and when log terms show up in the equation it throws me off even more.
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Can you get DB username, pw, database name in Rails?
I'm writing a rake task that does some DB work outside of Rails/ActiveRecord.
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What is PAGEIOLATCH_SH wait type in SQL Server?
I have a query that is taking a long time in the middle of a transaction. When I get the wait_type of the process it is PAGEIOLATCH_SH .
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How to map calculated properties with JPA and Hibernate
My Java bean has a childCount property. This property is not mapped to a database column . Instead, it should be calculated by the database with a COUNT() function operating on the join of my Java bean and its children. It would be even better if this property could be calculated on demand / "laz...