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Removing index column in pandas when reading a csv
...column(s), it is not a column, which is why del df['index'] did not work.
If you want to replace the index with simple sequential numbers, use df.reset_index().
To get a sense for why the index is there and how it is used, see e.g. 10 minutes to Pandas.
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Difference between HashMap, LinkedHashMap and TreeMap
What is the difference between HashMap , LinkedHashMap and TreeMap in Java?
I don't see any difference in the output as all the three has keySet and values . What are Hashtable s?
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How to copy a collection from one database to another in MongoDB
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Note that if you copy in the JS shell the BSON documents are decoded to JSON during the process so some documents may incur type changes. mongodump/mongorestore are generally the better approach.
– Stennie
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Never seen before C++ for loop
...way, Thomas may have been confused by the use of the comma too, it's very different than the semi-colon, it lets you do multiple things in one section of the for loop (in this case, it initialized two variables). Last time I checked these unusual constructs weren't considered the most readable solu...
Find files and tar them (with spaces)
... problem here. I'm working on a simple back up code. It works fine except if the files have spaces in them. This is how I'm finding files and adding them to a tar archive:
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Computed read-only property vs function in Swift
In the Introduction to Swift WWDC session, a read-only property description is demonstrated:
10 Answers
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How much is too much with C++11 auto keyword?
...se it could be changed in the future. I would write auto in this case.
So if the auto keyword improves readability in a particular case then use it. You can write auto when it is obvious to the reader what type auto represents.
Here are some examples:
auto foo = std::make_shared<Foo>(); /...
Get the value in an input text box
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@ParbhuBissessar Not necessarily. If he wants the literal text 'bla', the he's got it right. If he wants the val of the var bla then he needs to remove the quotes.
– double_j
Nov 15 '16 at 21:49
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Calculating arithmetic mean (one type of average) in Python
...is a bad variable name because it looks so much like 1. Also, I would use if l rather than if len(l) > 0. See here
– zondo
Apr 13 '16 at 22:40
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Operator overloading in Java
Please can you tell me if it is possible to overload operators in Java? If it is used anywhere in Java could you please tell me about it.
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