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Efficiently checking if arbitrary object is NaN in Python / numpy / pandas?
...lues. As I iterate over the data set, I need to detect such missing values and handle them in special ways.
2 Answers
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What is the difference between getFields and getDeclaredFields in Java reflection
I'm a little confused about the difference between the getFields method and the getDeclaredFields method when using Java reflection.
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How to check if an element is in an array
...y? Xcode does not have any suggestions for contain , include , or has , and a quick search through the book turned up nothing. Any idea how to check for this? I know that there is a method find that returns the index number, but is there a method that returns a boolean like ruby's #include? ?
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How to read the mode field of git-ls-tree's output
...digits show file type, the third one is about set-uid/set-gid/sticky bits, and you know the last three.
Here is how man 2 stat documents it on my GNU/Linux system:
The following flags are defined for the st_mode field:
S_IFMT 0170000 bit mask for the file type bit fields
S_...
Remove leading and trailing spaces?
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You can use the strip() to remove trailing and leading spaces.
>>> s = ' abd cde '
>>> s.strip()
'abd cde'
Note: the internal spaces are preserved
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Is there an equivalent to background-size: cover and contain for image elements?
I have a site with many pages and different background pictures, and I display them from CSS like:
14 Answers
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Does async(launch::async) in C++11 make thread pools obsolete for avoiding expensive thread creation
...rong. I was under the impression that Linux thread creation was very cheap and after testing I determined that the overhead of function call in a new thread vs. a normal one is enormous. The overhead for creating a thread to handle a function call is something like 10000 or more times slower than a ...
Reference list item by index within Django template?
This may be simple, but I looked around and couldn't find an answer. What's the best way to reference a single item in a list from a Django template?
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Using new line(\n) in string and rendering the same in HTML
...ace will collapse into a single whitespace. Text will wrap when necessary, and on line breaks. More information on: https://www.w3schools.com/cssref/pr_text_white-space.asp
– HakuteiJ
Jul 17 '17 at 1:56
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How to run cron job every 2 hours
...wered Jun 21 '11 at 10:10
James AndersonJames Anderson
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