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Can I see changes before I save my file in Vim?

...t=nofile bh=wipe nobl noswf ro ft=" . filetype endfunction com! DiffSaved call s:DiffWithSaved() To get out of diff view you can use the :diffoff command. Below is a similar function, adapted to mimic the 'cvs diff' command... ...
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Right way to reverse pandas.DataFrame?

...hzad.nouri 55.7k1414 gold badges103103 silver badges111111 bronze badges ...
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How to verify that method was NOT called in Moq?

... answered Feb 11 '09 at 16:13 Dan FishDan Fish 2,24211 gold badge1414 silver badges88 bronze badges ...
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How to install psycopg2 with “pip” on Python?

I'm using virtualenv and I need to install "psycopg2". 33 Answers 33 ...
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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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Singleton: How should it be used

...rface widgets It is supposed to be a cache In strings In Sessions I can go all day long How to create the best singleton: The smaller, the better. I am a minimalist Make sure it is thread safe Make sure it is never null Make sure it is created only once Lazy or system initialization? Up to your re...
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How to prevent browser page caching in Rails

... Finally figured this out - http://blog.serendeputy.com/posts/how-to-prevent-browsers-from-caching-a-page-in-rails/ in application_controller.rb After Rails 5: class ApplicationController < ActionController::Base before_a...
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Is it possible to delete an object's property in PHP?

... Sajjad AshrafSajjad Ashraf 3,00611 gold badge3131 silver badges2929 bronze badges ...
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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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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 = [(...