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How do I automatically update a timestamp in PostgreSQL

I want the code to be able to automatically update the time stamp when a new row is inserted as I can do in MySQL using CURRENT_TIMESTAMP. ...
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Python group by

... Python's built-in itertools module actually has a groupby function , but for that the elements to be grouped must first be sorted such that the elements to be grouped are contiguous in the list: from operator import itemgetter sortkeyfn = itemgetter(1) input = [(...
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Is HTML considered a programming language? [closed]

... No, HTML is not a programming language. The "M" stands for "Markup". Generally, a programming language allows you to describe some sort of process of doing something, whereas HTML is a way of adding context and structure to text. If you're looking to add more alphabet soup to your CV, don't classi...
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How to find index of list item in Swift?

...B = arr.indexOf("b") // 1 let indexOfD = arr.indexOf("d") // nil Additionally, finding the first element in an array fulfilling a predicate is supported by another extension of CollectionType: let arr2 = [1,2,3,4,5,6,7,8,9,10] let indexOfFirstGreaterThanFive = arr2.indexOf({$0 > 5}) // 5 let i...
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Is ASCII code 7-bit or 8-bit?

...ans it can be fit into 7-bits. So can't it be argued that ASCII bit is actually 7-bit code? 6 Answers ...
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Excel Date to String conversion

... Full reference to the TEXT function especially to know how to set formats: see Guidelines for date and time formats on this page office.microsoft.com/en-us/excel-help/… – codea Sep 9 '13 at 21:07 ...
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How to retrieve Request Payload

...); $data then contains the json data is php array. php://input is a so called wrapper. php://input is a read-only stream that allows you to read raw data from the request body. In the case of POST requests, it is preferable to use php://input instead of $HTTP_RAW_POST_DATA as it does not ...
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How to count objects in PowerShell?

... @Damien OK. I made the edit . In SO people generally come from the first answer to the last. They wont suddenly jump into the third answer and get confused. So that I made it as a continuation of first two answers. That answer makes more sense then this edited one. ...
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Please enter a commit message to explain why this merge is necessary, especially if it merges an upd

... Sajid Zeb 9471111 silver badges2323 bronze badges answered Sep 30 '13 at 3:17 Saad.elzwawySaad.elzwawy ...
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How can I define colors as variables in CSS?

...les, so that I can just change a variable to have the new color applied to all elements that use it? 19 Answers ...