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Replace None with NaN in pandas dataframe
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If you imported data from an SQL database, you can combine this with the answer below. This converts None (which isn't a string) to NaN. Then you can df['column'].replace(nan, "", inplace=True) if say you wanted None to be empty string.
– VISQL
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How to fix the uninitialized constant Rake::DSL problem on Heroku?
...ng on. (Using the rails installer on windows and deploying to heroku, as a complete beginner.)
– Jack V.
Jun 14 '11 at 22:46
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Using C++ library in C code
...function declaration, then you have to at least put extern "C" there. Your compiler will tell you if you also have to put it on the definition.
– Greg Hewgill
Oct 16 '17 at 3:15
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Why “decimal” is not a valid attribute parameter type?
... edited May 23 '17 at 11:54
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answered Jul 7 '10 at 8:01
djdd87djdd87
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How to change font size on part of the page in LaTeX?
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Use JSTL forEach loop's varStatus as an ID
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8
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How to add new item to hash
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@maguri hash.merge!(item2: 2) performs slower compared to hash[:item2] = 2 when there is only one argument
– Rahul Dess
Oct 5 '18 at 22:00
add a c...
Rails mapping array of hashes onto single hash
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You could compose Enumerable#reduce and Hash#merge to accomplish what you want.
input = [{"testPARAM1"=>"testVAL1"}, {"testPARAM2"=>"testVAL2"}]
input.reduce({}, :merge)
is {"testPARAM2"=>"testVAL2", "testPARAM1"=>"testV...
What does the “expand” option do in grunt-contrib-copy? The examples all use it but the docs say not
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82
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How can I pass a constant value for 1 binding in multi-binding?
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