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How can I make a div stick to the top of the screen once it's been scrolled to?

I would like to create a div, that is situated beneath a block of content but that once the page has been scrolled enough to contact its top boundary, becomes fixed in place and scrolls with the page. ...
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How to find a parent with a known class in jQuery?

I have a <div> that has many other <div> s within it, each at a different nesting level. Rather than give every child <div> an identifier, I rather just give the root <div> the identifier. Here’s an example: ...
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Numpy index slice without losing dimension information

I'm using numpy and want to index a row without losing the dimension information. 6 Answers ...
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How to hash a password

I'd like to store the hash of a password on the phone, but I'm not sure how to do it. I can only seem to find encryption methods. How should the password be hashed properly? ...
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float64 with pandas to_csv

I'm reading a CSV with float numbers like this: 2 Answers 2 ...
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How to return an array from JNI to Java?

I am attempting to use the android NDK. 4 Answers 4 ...
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What is Vim recording and how can it be disabled?

I keep seeing the recording message at the bottom of my gVim 7.2 window. 6 Answers 6...
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Bash script to calculate time elapsed

I am writing a script in bash to calculate the time elapsed for the execution of my commands, consider: 10 Answers ...
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How to get last items of a list in Python?

I need the last 9 numbers of a list and I'm sure there is a way to do it with slicing, but I can't seem to get it. I can get the first 9 like this: ...
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How to navigate through a vector using iterators? (C++)

The goal is to access the "nth" element of a vector of strings instead of the [] operator or the "at" method. From what I understand, iterators can be used to navigate through containers, but I've never used iterators before, and what I'm reading is confusing. ...