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Adding a column to a data.frame
I have the data.frame below. I want to add a column that classifies my data according to column 1 ( h_no ) in that way that the first series of h_no 1,2,3,4 is class 1, the second series of h_no (1 to 7) is class 2 etc. such as indicated in the last column.
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Using JSON.NET as the default JSON serializer in ASP.NET MVC 3 - is it possible?
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The code refers to MySpecialContractResolver, which isn't defined. This question helps with that (and was very related to the problem I had to solve): stackoverflow.com/questions/6700053/…
– Elliveny
Feb...
Split a string by spaces — preserving quoted substrings — in Python
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It seems that for performance reasons re is faster. Here is my solution using a least greedy operator that preserves the outer quotes:
re.findall("(?:\".*?\"|\S)+", s)
Result:
['this', 'is', '"a test"']
It leaves constructs like aaa"bla blub"bbb together as these tokens are not ...
XmlSerializer - There was an error reflecting type
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My object had a Uri field, which caused this exception; the Uri class does not have a parameterless constructor. Thanks for the tip.
– ford
Oct 28 '11 at 21:45
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Best data type for storing currency values in a MySQL database
What is the best SQL data type for currency values? I'm using MySQL but would prefer a database independent type.
9 Answer...
For every character in string
...ing throughout a pipeline or application, for the basis of this discussion my std::strings are all utf8 :p.
– Robinson
Jul 25 '14 at 11:12
4
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Unlink of file failed
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In my case it was Skype. I'd earlier transferred the file to others and some had not yet accepted or cancelled.
– Vivek Kodira
Sep 11 '13 at 7:20
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File upload progress bar with jQuery
I am trying to implement an AJAX file upload feature in my project. I am using jQuery for this; my code submits the data using AJAX. I also want to implement a file upload progress bar. How can I do this? Is there any way to calculate how much has already been uploaded so that I can calculate the pe...
How can I rename a database column in a Ruby on Rails migration?
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In my opinion, in this case, it's better to use rake db:rollback, then edit your migration and again run rake db:migrate.
However, if you have data in the column you don't want to lose, then use rename_column.
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How do I loop through a date range?
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Look at my answer for extensions for days and months ;) Just for your pleasure :D
– Jacob Sobus
Feb 5 '15 at 9:10
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