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How do I get the opposite (negation) of a Boolean in Python?

...ham 60.5k1212 gold badges8484 silver badges119119 bronze badges answered Aug 11 '11 at 18:16 jtbandesjtbandes 101k3333 gold badges...
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How to avoid isset() and empty()

I have several older applications that throw a lot of "xyz is undefined" and "undefined offset" messages when running on the E_NOTICE error level, because the existence of variables is not explicitly checked using isset() and consorts. ...
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What's a good way to overwrite DateTime.Now during testing?

I've got some (C#) code that relies on today's date to correctly calculate things in the future. If I use today's date in the testing, I have to repeat the calculation in the test, which doesn't feel right. What's the best way to set the date to a known value within the test so that I can test that ...
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Break when a value changes using the Visual Studio debugger

Is there a way to place a watch on variable and only have Visual Studio break when that value changes? 13 Answers ...
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How to convert string to boolean php

How can I convert string to boolean ? 20 Answers 20 ...
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How do I update pip itself from inside my virtual environment?

...managed packages, but how do I update pip itself? According to pip --version , I currently have pip 1.1 installed in my virtualenv and I want to update to the latest version. ...
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Calling clojure from java

....lang.RT to compile the source code. Could you help with a clear explanation of how to call Clojure from Java assuming you have already built a jar from the Clojure project and included it in the classpath? ...
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Is there a conditional ternary operator in VB.NET?

In Perl (and other languages) a conditional ternary operator can be expressed like this: 3 Answers ...
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How to request Administrator access inside a batch file

...writing their hosts file, so it needs to be run with Administrator permissions. I need to be able to send them an email with a link to the .bat file. The desired behavior is that when they right-click on the file and say Open, they will get one of those UAC dialogs that makes the screen go dark an...
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How can I implement an Access Control List in my Web MVC application?

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