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Why does datetime.datetime.utcnow() not contain timezone information?
Why does this datetime not have any timezone info given that it is explicitly a UTC datetime ?
9 Answers
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Cast Int to enum in Java
...to cache MyEnum.values() as its expensive. i.e. if you call it hundreds of times.
– Peter Lawrey
May 4 '11 at 7:27
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Listing all permutations of a string/integer
...t to explain it human language. I think recursion is very easy most of the times. You only have to grasp two steps:
The first step
All the other steps (all with the same logic)
In human language:
In short:
The permutation of 1 element is one element.
The permutation of a set of elements is a lis...
Fluent and Query Expression — Is there any benefit(s) of one over other?
...f the greatest improvements to .NET since generics and it saves me tons of time, and lines of code. However, the fluent syntax seems to come much more natural to me than the query expression syntax.
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Fastest way to tell if two files have the same contents in Unix/Linux?
...There is no alternative. So creating hashes or checksums at some point in time requires reading the whole file. Big files take time.
File metadata retrieval is much faster than reading a large file.
So, is there any file metadata you can use to establish that the files are different?
File size ? ...
Remove new lines from string and replace with one empty space
... Just wanted to let u know that Your solution has saved me a lot of time.
– Parthapratim Neog
Jul 31 '15 at 10:26
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git rebase without changing commit timestamps
Would it make sense to perform git rebase while preserving the commit timestamps?
5 Answers
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java.util.Date vs java.sql.Date
...handling.
Basically databases usually support at least three forms of datetime fields which are date, time and timestamp. Each of these have a corresponding class in JDBC and each of them extend java.util.Date. Quick semantics of each of these three are the following:
java.sql.Date corresponds to...
Pandas conditional creation of a series/dataframe column
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It's a shame i can't upvote this multiple times. One upvote doesn't seem enough.
– Harper
Aug 15 '19 at 9:26
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Reuse a parameter in String.format?
Does the hello variable need to be repeated multiple times in the call to the format method or is there a shorthand version that lets you specify the argument once to be applied to all of the %s tokens?
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