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Comparing two dataframes and getting the differences
...rames axes are compared with _indexed_same method, and exception is raised if differences found, even in columns/indices order.
If I got you right, you want not to find changes, but symmetric difference. For that, one approach might be concatenate dataframes:
>>> df = pd.concat([df1, df2]...
Pandas count(distinct) equivalent
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What if I have multiple columns that I want to be unique together, like in .drop_duplicates(subset=['col1','col2'])?
– ErnestScribbler
Oct 2 '17 at 8:10
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What is PECS (Producer Extends Consumer Super)?
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tl;dr: "PECS" is from the collection's point of view. If you are only pulling items from a generic collection, it is a producer and you should use extends; if you are only stuffing items in, it is a consumer and you should use super. If you do both with the same collection, you ...
Using an integer as a key in an associative array in JavaScript
...bject instead. I just wanted to use facebook id as the key, and JSON.stringify would crash my machine ;)
– Krystian
Dec 4 '13 at 15:50
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Adding minutes to date time in PHP
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With date: 2011-11-18 00:00 if I add 5 mins, I get 2012-04-18 00:00 as a result. ` $time = new DateTime($_REQUEST['start']); $time->add(new DateInterval('P' . $duration . 'M')); $endTime = $time->format('Y-m-d H:i'); echo $endTime; ` Applogies f...
What is the difference between i++ and ++i?
... post-increment operators. In both cases the variable is incremented, but if you were to take the value of both expressions in exactly the same cases, the result will differ.
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Sending “User-agent” using Requests library in Python
...gent" while requesting a webpage using Python Requests. I am not sure is if it is okay to send this as a part of the header, as in the code below:
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Is there an ignore command for git like there is for svn?
... whatever subdirectory.
You can also edit .git/info/exclude to ignore specific files just in that one working copy. The .git/info/exclude file will not be committed, and will thus only apply locally in this one working copy.
You can also set up a global file with patterns to ignore with git config...
What to return if Spring MVC controller method doesn't return value?
...value = HttpStatus.OK)
public void updateDataThatDoesntRequireClientToBeNotified(...) {
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}
Only get methods return a 200 status code implicity, all others you have do one of three things:
Return void and mark the method with @ResponseStatus(value = HttpStatus.OK)
Return An object and mar...
How to assign a Git SHA1's to a file without Git?
... edited Jun 27 '14 at 19:57
Leif
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answered Feb 16 '09 at 9:25
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