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How do I alter the position of a column in a PostgreSQL database table?
I've tried the following, but I was unsuccessful:
9 Answers
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How do I return multiple values from a function in C?
If I have a function that produces a result int and a result string , how do I return them both from a function?
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Find the index of a dict within a list, by matching the dict's value
I have a list of dicts:
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What are good alternatives to SQL (the language)? [closed]
I occasionally hear things about how SQL sucks and it's not a good language, but I never really hear much about alternatives to it. So, are other good languages that serve the same purpose (database access) and what makes them better than SQL? Are there any good databases that use this alternative l...
How do I sort a dictionary by value?
I have a dictionary of values read from two fields in a database: a string field and a numeric field. The string field is unique, so that is the key of the dictionary.
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How to generate a random string in Ruby
I'm currently generating an 8-character pseudo-random uppercase string for "A" .. "Z":
50 Answers
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Why can't I reference my class library?
I have a solution that contains a website and a class library in Visual Studio 2008.
20 Answers
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Why do we need break after case statements?
Why doesn't the compiler automatically put break statements after each code block in the switch? Is it for historical reasons? When would you want multiple code blocks to execute?
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A numeric string as array key in PHP
Is it possible to use a numeric string like "123" as a key in a PHP array, without it being converted to an integer?
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Dynamically select data frame columns using $ and a character value
I have a vector of different column names and I want to be able to loop over each of them to extract that column from a data.frame. For example, consider the data set mtcars and some variable names stored in a character vector cols . When I try to select a variable from mtcars using a dynamic s...