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Computed / calculated / virtual / derived columns in PostgreSQL
Does PostgreSQL support computed / calculated columns, like MS SQL Server? I can't find anything in the docs, but as this feature is included in many other DBMSs I thought I might be missing something.
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How to overlay images
I want to overlay one image with another using CSS. An example of this is the first image (the background if you like) will be a thumbnail link of a product, with the link opening a lightbox / popup showing a larger version of the image.
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Difference between /res and /assets directories
I know that files in the res directory are accessible from R.class while assets behaves like a file system, but I would like to know, in general, when it's best to use one and the other.
Can anyone help me in knowing the real differences between res and assets?
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Read whole ASCII file into C++ std::string [duplicate]
I need to read a whole file into memory and place it in a C++ std::string .
9 Answers
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glVertexAttribPointer clarification
Just want to make sure I understand this correctly (I'd ask on SO Chat, but it's dead in there!):
2 Answers
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Get unique values from a list in python [duplicate]
I want to get the unique values from the following list:
30 Answers
30
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Is it expensive to use try-catch blocks even if an exception is never thrown?
We know that it is expensive to catch exceptions. But, is it also expensive to use a try-catch block in Java even if an exception is never thrown?
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Table Naming Dilemma: Singular vs. Plural Names [closed]
Academia has it that table names should be the singular of the entity that they store attributes of.
41 Answers
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What is the difference between '>' and a space in CSS selectors?
What's the point using this syntax
5 Answers
5
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