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How do I update pip itself from inside my virtual environment?
...ng 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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Provide an image for WhatsApp link sharing
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2020 standards
It takes a few steps to get the perfect preview for WhatsApp, Twitter, Facebook and bookmark icons for pc's and mobile devices. If you like reading go to ogp.me - but make sure to read steps 1 - 6 in this answer to ge...
Rails: How do I create a default value for attributes in Rails activerecord's model? [duplicate]
...consider using the before_validation callback.
– tokland
Jul 15 '10 at 10:13
44
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Lists in ConfigParser
...here is nothing stopping you from packing the list into a delimited string and then unpacking it once you get the string from the config. If you did it this way your config section would look like:
[Section 3]
barList=item1,item2
It's not pretty but it's functional for most simple lists.
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Bash script and /bin/bash^M: bad interpreter: No such file or directory [duplicate]
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I have seen this issue when creating scripts in Windows env and then porting over to run on a Unix environment.
Try running dos2unix on the script:
http://dos2unix.sourceforge.net/
Or just rewrite the script in your Unix env using vi and test.
Unix uses different line endings so ...
Check orientation on Android phone
How can I check if the Android phone is in Landscape or Portrait?
23 Answers
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How stable is the git plugin for eclipse?
I was intending to have a play with git, and was wondering if anyone had used the git plugin for eclipse
12 Answers
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How to remove trailing whitespace of all files recursively?
...he trailing whitespace of an entire project? Starting at a root directory, and removing the trailing whitespace from all files in all folders.
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Best way to extract a subvector from a vector?
... +1, also it's O(Y-X), which is less than or equal to O(N) (and in his example much less)
– orip
Jan 7 '09 at 21:53
78
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When should I use “this” in a class?
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The this keyword is primarily used in three situations. The first and most common is in setter methods to disambiguate variable references. The second is when there is a need to pass the current class instance as an argument to a method of another object. The third is as a way to call alter...