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Multiple levels of 'collection.defaultdict' in Python
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StevenWernerCS
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answered Apr 8 '10 at 14:40
interjayinterjay
93.6k1818 gold...
How do SQL EXISTS statements work?
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edited May 1 '11 at 6:59
answered May 1 '11 at 6:54
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Most underused data visualization [closed]
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Community♦
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answered Jan 16 '10 at 18:17
ShaneShane
89.7k3131 gold badges...
What are the differences between concepts and template constraints?
... the type deduced for T is not a Sortable type. If you had done this in C++11, you'd have had some horrible error thrown from inside the sort function that makes no sense to anybody.
Constraints predicates are very similar to type traits. They take some template argument type and give you some info...
Find column whose name contains a specific string
... {'spike-2': [1,2,3], 'hey spke': [4,5,6], 'spiked-in': [7,8,9], 'no': [10,11,12]}
df = pd.DataFrame(data)
spike_cols = [col for col in df.columns if 'spike' in col]
print(list(df.columns))
print(spike_cols)
Output:
['hey spke', 'no', 'spike-2', 'spiked-in']
['spike-2', 'spiked-in']
Explanatio...
REST API Token-based Authentication
...93C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 45.2525 4.66231 44.6595 4.66231C43.6264 4.66231 43.1481 5.28821 43.1481 6.59048V11.9512C43.1481 13.2535 43.6264 13.8962 44.6595 13.8962C45.69...
What are the most-used vim commands/keypresses?
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answered Mar 23 '11 at 4:44
Greg HewgillGreg Hewgill
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How can I scan barcodes on iOS?
... licence agreement ?
– Radu
Apr 21 '11 at 13:36
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What is the meaning and difference between subject, user and principal?
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edited Feb 17 '11 at 20:12
answered Feb 17 '11 at 4:45
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