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How to use “/” (directory separator) in both Linux and Windows in Python?

I have written a code in python which uses / to make a particular file in a folder, if I want to use the code in windows it will not work, is there a way by which I can use the code in Windows and Linux. ...
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How to make my custom type to work with “range-based for loops”?

Like many people these days I have been trying the different features that C++11 brings. One of my favorites is the "range-based for loops". ...
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Cross cutting concern example

What is a good example of a cross-cutting concern ? The medical record example on the wikipedia page seems incomplete to me. ...
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Add default value of datetime field in SQL Server to a timestamp

I've got a table that collects forms submitted from our website, but for some reason, when they created the table, they didn't put a timestamp in the table. I want it to enter the exact date and time that the record was entered. ...
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Difference between git pull and git pull --rebase

I started using git sometime back and do not fully understand the intricacies. My basic question here is to find out the difference between a git pull and git pull --rebase , since adding the --rebase option does not seem to do something very different : just does a pull. ...
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How to install a gem or update RubyGems if it fails with a permissions error

I'm trying to install a gem using gem install mygem or update RubyGems using gem update --system , and it fails with this error: ...
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How to prevent a dialog from closing when a button is clicked

I have a dialog with EditText for input. When I click the "yes" button on dialog, it will validate the input and then close the dialog. However, if the input is wrong, I want to remain in the same dialog. Every time no matter what the input is, the dialog should be automatically closed when I clic...
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What does “Could not find or load main class” mean?

A common problem that new Java developers experience is that their programs fail to run with the error message: Could not find or load main class ... ...
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C# - Keyword usage virtual+override vs. new

What are differences between declaring a method in a base type " virtual " and then overriding it in a child type using the " override " keyword as opposed to simply using the " new " keyword when declaring the matching method in the child type? ...
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Best way to obfuscate an e-mail address on a website?

I've spent the past few days working on updating my personal website. The URL of my personal website is (my first name).(my last name).com, as my last name is rather unusual, and I was lucky enough to pick up the domain name. My e-mail address is (my first name)@(my last name).com. So really, when i...