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Hidden features of Python [closed]
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740
votes
Chaining comparison operators:
>>> x = 5
>>> 1 < x <...
SQL query for finding records where count > 1
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350
Use the HAVING clause and GROUP By the fields that make the row unique
The below will find
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Arrays, heap and stack and value types
In the above code, is new int[100] generating the array on the heap? From what I've read on CLR via c#, the answer is yes. But what I can't understand, is what happens to the actual int's inside the array. As they are value types, I'd guess they'd have to be boxed, as I can, for example, pass myInte...
What's the difference between ISO 8601 and RFC 3339 Date Formats?
ISO 8601 and RFC 3339 seem to be two formats that are common the web. Should I use one over the other? Is one just an extension? Do I really need to care that bad?
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How do I save and restore multiple variables in python?
...ly put them in a single list, or tuple, for instance:
import pickle
# obj0, obj1, obj2 are created here...
# Saving the objects:
with open('objs.pkl', 'w') as f: # Python 3: open(..., 'wb')
pickle.dump([obj0, obj1, obj2], f)
# Getting back the objects:
with open('objs.pkl') as f: # Python ...
How to get Chrome to allow mixed content?
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Steps as of Chrome v79 (2/24/2020):
Click the (i) button next to the URL
Click Site settings on the popup box
At the bottom of the list is "Insecure content", change this to Allow
Go back to the site and Refresh the page
Older Chrom...
Converting from longitude\latitude to Cartesian coordinates
...S-84 assumes the Earth is an ellipsoid, but I believe you only get about a 0.5% average error using an approach like the "Haversine Formula", which may be an acceptable amount of error in your case. You will always have some amount of error unless you're talking about a distance of a few feet and e...
How do I get current URL in Selenium Webdriver 2 Python?
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@proprius stackoverflow.com/questions/35592602/…
– ed22
Jul 9 '19 at 9:59
more import...
NameError: name 'reduce' is not defined in Python
...rams
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Purging file from Git repo failed, unable to create new backup
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edited Apr 4 '14 at 0:53
user456814
answered Jun 19 '11 at 18:37
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