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How do I update pip itself from inside my virtual environment?
...u would upgrade any package:
pip install --upgrade pip
On Windows the recommended command is:
python -m pip install --upgrade pip
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Should switch statements always contain a default clause?
In one of my first code reviews (a while back), I was told that it's good practice to include a default clause in all switch statements. I recently remembered this advice but can't remember what the justification was. It sounds fairly odd to me now.
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C# Java HashMap equivalent
Coming from a Java world into a C# one is there a HashMap equivalent? If not what would you recommend?
7 Answers
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.gitignore is ignored by Git
...o "know" about them even after you add them to .gitignore.
WARNING: First commit your current changes, or you will lose them.
Then run the following commands from the top folder of your Git repository:
git rm -r --cached .
git add .
git commit -m "fixed untracked files"
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bash assign default value
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Please look at http://www.tldp.org/LDP/abs/html/parameter-substitution.html for examples
${parameter-default}, ${parameter:-default}
If parameter not set, use default. After the call, parameter is still not set.
Both forms are almost equ...
How do you remove the root CA certificate that fiddler installs
Fiddler helpfully offers to add a unique root CA certificate to intercept HTTPS traffic.
4 Answers
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How do I enter RGB values into Interface Builder?
...the color picker always sets it to RGB. So no good. Instead I found this:
http://wafflesoftware.net/hexpicker/
That shows the hexadecimal value and it works fully on Xcode 5.0.1 and Mavericks.
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How to use JUnit to test asynchronous processes
...ting), or user acceptance testing (e.g. w/ Cucumber), waiting for an async completion and verifying the result is absolutely necessary.
– Les Hazlewood
Sep 3 '14 at 20:09
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How to get a pixel's x,y coordinate color from an image?
... transparency with 0 being fully transparent.
Here is a jsFiddle example: http://jsfiddle.net/thirtydot/9SEMf/869/ I used jQuery for convenience in all of this, but it is by no means required.
Note: getImageData falls under the browser's same-origin policy to prevent data leaks, meaning this tech...
How to remove single character from a String
For accessing individual characters of a String in Java, we have String.charAt(2) . Is there any inbuilt function to remove an individual character of a String in java?
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