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Serializing object that contains cyclic object value

I have an object (parse tree) that contains child nodes which are references to other nodes. 7 Answers ...
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Creating a new column based on if-elif-else condition

I have a DataFrame df : 4 Answers 4 ...
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insert multiple rows via a php array into mysql

I'm passing a large dataset into a MySQL table via PHP using insert commands and I'm wondering if its possible to insert approximately 1000 rows at a time via a query other than appending each value on the end of a mile long string and then executing it. I am using the CodeIgniter framework so its f...
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Integer division: How do you produce a double?

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Test if number is odd or even

What is the simplest most basic way to find out if a number/variable is odd or even in PHP? Is it something to do with mod? ...
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Correct way to use StringBuilder in SQL

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What's a standard way to do a no-op in python?

I often find myself writing if / elif / else constructs in python, and I want to include options which can occur, but for which the corresponding action is to do nothing. I realise I could just exclude those if statements, but for readability I find it helps to include them all, so that if you are l...
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Netty vs Apache MINA

They both provide roughly the same functionality. Which one should I choose to develop my high-performance TCP server? What are the pros & cons? ...
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How to delete a remote tag?

How do you delete a Git tag that has already been pushed? 21 Answers 21 ...
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Round to at most 2 decimal places (only if necessary)

I'd like to round at most 2 decimal places, but only if necessary . 79 Answers 79 ...