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Convert number strings with commas in pandas DataFrame to float
I have a DataFrame that contains numbers as strings with commas for the thousands marker. I need to convert them to floats.
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What are the complexity guarantees of the standard containers?
Apparently ;-) the standard containers provide some form of guarantees.
3 Answers
3
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Select a Dictionary with LINQ
I have used the "select" keyword and extension method to return an IEnumerable<T> with LINQ, but I have a need to return a generic Dictionary<T1, T2> and can't figure it out. The example I learned this from used something in a form similar to the following:
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How to find list intersection?
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If order is not important and you don't need to worry about duplicates then you can use set intersection:
>>> a = [1,2,3,4,5]
>>> b = [1,3,5,6]
>>> list(set(a) & set(b))
[1, 3, 5]
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leading zeros in rails
I have fields hr and min , both integers in my application. For hr field, if the user enters "1" I would like Rails to automatically pad it to "01" before saving it to the database. Also for the min field if the user enter "0" it should put in as "00".
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Show MySQL host via SQL Command
...w the current connections host.
Not connection_id, but the IP Address or Name of the host.
4 Answers
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HTML span align center not working?
I have some HTML:
7 Answers
7
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There can be only one auto column
How do I correct the error from MySQL 'you can only have one auto increment column'.
4 Answers
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Mark current Line, and navigate through marked lines
In Visual Studio, we can use:
CTRL+kk to place a marker on the current line
and
CTRL+kn to navigate through marked lines.
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How to @link to a Enum Value using Javadoc
Using Javadoc 1.5, I have been unable to create a @link to an Enumeration value.
3 Answers
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