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python pandas: Remove duplicates by columns A, keeping the row with the highest value in column B
...s well
df.drop_duplicates(subset='A', keep='last')
I referred this from https://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.drop_duplicates.html
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Remove all line breaks from a long string of text
... multiple whitespace".split())
Out: 'some text with multiple whitespace'
https://docs.python.org/2/library/stdtypes.html#str.split
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Why is typeof null “object”?
...in short: it is bug in ECMAScript, and the type should be null
reference: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/null
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Why can't decimal numbers be represented exactly in binary?
...ymbol to represent the repeating part of the sequence. The article: http://www.cs.toronto.edu/~hehner/ratno.pdf and the Wikipedia entry: http://en.wikipedia.org/wiki/Quote_notation.
There's nothing that says we can't add a symbol to our representation system, so we can represent decimal rationals e...
Reading an Excel file in python using pandas
...t_name='Sheet1')
sheet2 = pd.read_excel(reader, sheet_name='Sheet2')
https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.read_excel.html
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Use rvmrc or ruby-version file to set a project gemset with RVM?
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Install rvm using:
\curl -sSL https://get.rvm.io | bash -s stable --rails
Install different ruby versions:
rvm install 1.8.7
rvm install 1.9.2
Switch to specific ruby version. For example, 1.8.7:
rvm use 1.8.7
To create a gemse:
rvm gemset create...
Is there a way to instantiate objects from a string holding their class name?
...
boost::functional has a factory template which is quite flexible: http://www.boost.org/doc/libs/1_54_0/libs/functional/factory/doc/html/index.html
My preference though is to generate wrapper classes which hide the mapping and object creation mechanism. The common scenario I encounter is the need ...
How to set the first option on a select box using jQuery?
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Something like this should do the trick: https://jsfiddle.net/TmJCE/898/
$('#name2').change(function(){
$('#name').prop('selectedIndex',0);
});
$('#name').change(function(){
$('#name2').prop('selectedIndex',0);
});
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Datatables - Search Box outside datatable
...table.search(this.value).draw();
});
Since: DataTables 1.10
– Source: https://datatables.net/reference/api/search()
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What is the purpose of Flask's context stacks?
... can make code more difficult for understanding.
Spend time to understand https://github.com/mitsuhiko/werkzeug/blob/master/werkzeug/local.py.
So how populated both stacks? On request Flask:
create request_context by environment (init map_adapter, match path)
enter or push this request:
clear p...