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Data Modeling with Kafka? Topics and Partitions
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4 Answers
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Replacing Pandas or Numpy Nan with a None to use with MysqlDB
...[2]:
0
0 1
1 NaN
In [3]: df1 = df.where(pd.notnull(df), None)
In [4]: df1
Out[4]:
0
0 1
1 None
Note: what you cannot do recast the DataFrames dtype to allow all datatypes types, using astype, and then the DataFrame fillna method:
df1 = df.astype(object).replace(np.nan, 'Non...
Is the sizeof(some pointer) always equal to four?
For example:
sizeof(char*) returns 4. As does int* , long long* , everything that I've tried. Are there any exceptions to this?
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What is the use of the ArraySegment class?
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ArraySegment<T> has become a lot more useful in .NET 4.5+ and .NET Core as it now implements:
IList<T>
ICollection<T>
IEnumerable<T>
IEnumerable
IReadOnlyList<T>
IReadOnlyCollection<T>
as opposed to the .NET 4 version which implemented no inter...
How to write a switch statement in Ruby
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24 Answers
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Long-lasting FB access-token for server to pull FB page info
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Elad Nava
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answered Feb 21 '14 at 7:11
redhotvengeanceredhotvengeance
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How to print out more than 20 items (documents) in MongoDB's shell?
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edited Feb 6 at 9:47
Wilfred Knievel
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answ...
Is there a difference between using a dict literal and a dict constructor?
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answered Jul 7 '11 at 12:43
John La RooyJohn La Rooy
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What happens to git commits created in a detached HEAD state?
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answered Apr 2 '12 at 21:40
Dietrich EppDietrich Epp
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Algorithm to return all combinations of k elements from n
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Art of Computer Programming Volume 4: Fascicle 3 has a ton of these that might fit your partic...