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Convert Pandas column containing NaNs to dtype `int`
I read data from a .csv file to a Pandas dataframe as below. For one of the columns, namely id , I want to specify the column type as int . The problem is the id series has missing/empty values.
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Retrieving the inherited attribute names/values using Java Reflection
I've a Java object 'ChildObj' which is extended from 'ParentObj'. Now, if it is possible to retrieve all the attribute names and values of ChildObj, including the inherited attributes too, using Java reflection mechanism?
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Can an int be null in Java?
..., you could be returning an int or an Integer.
This behavior is different from some more purely object oriented languages like Ruby, where even "primitive" things like ints are considered objects.
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How does one capture a Mac's command key via JavaScript?
... be interested in reading the article JavaScript Madness: Keyboard Events, from which I learned that knowledge.
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Could not reserve enough space for object heap
... +1 for pointing out _JAVA_OPTIONS — in my case java is called from somewhere deep within a shell script to which I have no write access, so this option is preferable.
– gerrit
May 15 '15 at 9:50
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With Spring can I make an optional path variable?
... answer here suggests that the controller won't be hit if {type} is absent from the path. I think PathVariable Map would be a better approach, or using separate controllers.
– Anshul Tiwari
Oct 17 '16 at 13:39
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How to make a round button?
... its workng perfectly,thank you. can you help me to draw rectangle from center to outside of circle looks like a 'Q'
– CLIFFORD P Y
Jan 10 '17 at 1:58
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Using wget to recursively fetch a directory with arbitrary files in it
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Here's the complete wget command that worked for me to download files from a server's directory (ignoring robots.txt):
wget -e robots=off --cut-dirs=3 --user-agent=Mozilla/5.0 --reject="index.html*" --no-parent --recursive --relative --level=1 --no-directories http://www.example.com/archive/ex...
Make install, but not to default directories?
... there will be references to the path you run make in anyway, if you build from source.
– Konstantin Rybakov
Jan 29 at 7:32
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PHP Replace last occurrence of a String in a String?
... work because rtrim doesn't behave the way you're thinking. It will strip from the end any characters that exist in the search string in whatever order (and always append the replacement), e.g. "Hello word" -> "Hello John", "Hello lord" -> "Hello John", "Hello motor" -> "Hello motJohn", "H...