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How can I select rows with most recent timestamp for each key value?

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What is the difference between object keys with quotes and without quotes?

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Why is parenthesis in print voluntary in Python 2.7?

In Python 2.7 both the following will do the same 4 Answers 4 ...
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Inject errors into already validated form?

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When to add what indexes in a table in Rails

... 176 Should I add "index" to all the foreign keys like "xxx_id"? It would be better, because it...
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Run a JAR file from the command line and specify classpath

... fixed. – Tuntable May 28 '19 at 2:37 1 Note that the manifesst Class-Path can only be used for l...
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How can I use vim to convert my file to utf8?

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How Should I Declare Foreign Key Relationships Using Code First Entity Framework (4.1) in MVC3?

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enum - getting value of enum on string conversion

... 197 You are printing the enum object. Use the .value attribute if you wanted just to print that: pr...
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correct way to use super (argument passing)

... 107 Sometimes two classes may have some parameter names in common. In that case, you can't pop the k...