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How to index into a dictionary?
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110
Dictionaries are unordered in Python versions up to and including Python 3.6. If you do not c...
Dictionaries and default values
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edited Jan 23 '19 at 5:30
Solomon Ucko
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How to split a sequence into two pieces by predicate?
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195
By using partition method:
scala> List(1,2,3,4).partition(x => x % 2 == 0)
res0: (List...
Examples of Algorithms which has O(1), O(n log n) and O(log n) complexities
What are some algorithms which we use daily that has O(1), O(n log n) and O(log n) complexities?
11 Answers
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How to merge dictionaries of dictionaries?
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147
this is actually quite tricky - particularly if you want a useful error message when things ar...
Passing parameters in rails redirect_to
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174
Just append them to the options:
redirect_to controller: 'thing', action: 'edit', id: 3, some...
Closing multiple issues in Github with a commit message
I know you can close issues by putting closes #1 or fixes #1 in the commit message. What is the best way to close multiple issues in the same commit message?
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How do I check the difference, in seconds, between two dates?
...es, use total_seconds like this:
import datetime as dt
a = dt.datetime(2013,12,30,23,59,59)
b = dt.datetime(2013,12,31,23,59,59)
(b-a).total_seconds()
86400.0
#note that seconds doesn't give you what you want:
(b-a).seconds
0
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