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Appending to an empty DataFrame in Pandas?
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i always forget you need to assign it!
– Andy B
Aug 4 '14 at 19:07
71
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VIM + JSLint?
...makeprg=cat\ %\ \\\|\ /my/path/to/js\ /my/path/to/mylintrun.js\ %
set errorformat=%f:%l:%c:%m
where you have to change /my/path/to/js to the path to SpiderMonkey and /my/path/to/mylintrun.js to the path where you put the JS files.
Now, you can use :make in VIM and use the quickfix window (:he qui...
Parsing JSON with Unix tools
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There are a number of tools specifically designed for the purpose of manipulating JSON from the command line, and will be a lot easier and more reliable than doing it with Awk, such as jq:
curl -s 'https://api.github.com/users/lambda' | jq -r '.name'
You can also do this ...
What does |= (ior) do in Python?
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|= performs an in-place+ operation between pairs of objects. In particular, between:
sets: a union operation
dicts: an update operation
counters: a union (of multisets) operation
numbers: a bitwise OR, binary operation
In most c...
How to position a DIV in a specific coordinates?
...to position a div and then nothing else, you don't need to use java script for that. You can achieve this by CSS only. What matters is relative to what container you want to position your div, if you want to position it relative to document body then your div must be positioned absolute and its cont...
Ruby Metaprogramming: dynamic instance variable names
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The method you are looking for is instance_variable_set. So:
hash.each { |name, value| instance_variable_set(name, value) }
Or, more briefly,
hash.each &method(:instance_variable_set)
If your instance variable names are missing the "@" (as th...
Check if a user has scrolled to the bottom
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As usual you get there before me. Anyway, to the OP, if you have a container of posts, use it's ID instead of "window", also, you might want to change the last .height() to scrollHeight
– Christian
Oct 9 '10 at ...
How to handle Handler messages when activity/fragment is paused
...Whenever your activity receives an onPause() call PauseHandler.pause() and for onResume() call PauseHandler.resume().
Replace your implementation of the Handler handleMessage() with processMessage().
Provide a simple implementation of storeMessage() which always returns true.
/**
* Message Handl...
Override ActiveRecord attribute methods
...name.capitalize)
end
def name
read_attribute(:name).downcase # No test for nil?
end
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jQuery: Difference between position() and offset()
...ntical. The offset parent is "the closest positioned containing element."
For example, with this document:
<div style="position: absolute; top: 200; left: 200;">
<div id="sub"></div>
</div>
Then the $('#sub').offset() will be {left: 200, top: 200}, but its .positi...