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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 ...
Command-line Unix ASCII-based charting / plotting tool
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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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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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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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Knight's Shortest Path on Chessboard
I've been practicing for an upcoming programming competition and I have stumbled across a question that I am just completely bewildered at. However, I feel as though it's a concept I should learn now rather than cross my fingers that it never comes up.
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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 swap keys and values in a hash
How do I swap keys and values in a Hash?
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Big-O summary for Java Collections Framework implementations? [closed]
I may be teaching a "Java crash-course" soon. While it is probably safe to assume that the audience members will know Big-O notation, it is probably not safe to assume that they will know what the order of the various operations on various collection implementations is.
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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...