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Find element's index in pandas Series
...
Converting to an Index, you can use get_loc
In [1]: myseries = pd.Series([1,4,0,7,5], index=[0,1,2,3,4])
In [3]: Index(myseries).get_loc(7)
Out[3]: 3
In [4]: Index(myseries).get_loc(10)
KeyError: 10
Duplicate handling
I...
Why use 'virtual' for class properties in Entity Framework model definitions?
...ch. These are called getters and setters and at compilation time, they are converted into methods.
//Internally the code looks more like this:
public ICollection<RSVP> get_RSVPs()
{
return _RSVPs;
}
public void set_RSVPs(RSVP value)
{
_RSVPs = value;
}
private RSVP _RSVPs;
That's...
How to set a default value for an existing column
...exists. It's ridiculous that SQL Server requires a complex join against a system table just to identify the name of the default constraint, which shouldn't be necessary because there can be only one default constraint on a column.
– Triynko
Dec 6 '16 at 3:24
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What is the difference between currying and partial application?
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Currying is converting a single function of n arguments into n functions with a single argument each. Given the following function:
function f(x,y,z) { z(x(y));}
When curried, becomes:
function f(x) { lambda(y) { lambda(z) { z(x(y));...
How to import an excel file in to a MySQL database
...abase named mydatabase.
Select the relevant cells:
Paste into Mr. Data Converter and select the output as MySQL:
Change the table name and column definitions to fit your requirements in the generated output:
CREATE TABLE sales (
id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
Country VARCHAR...
How does the bitwise complement operator (~ tilde) work?
...numbers are stored in 2's complement form,
the acquired result we have to convert into 2's complement( first perform 1's complement and just add 1 to 1's complement).
all the one will become zeros,except most significant bit 1(which is our sign representation of the number,that means for remaining...
Getting SyntaxError for print with keyword argument end=' '
...han a linebreak)
If you want more control over the output, consider using sys.stdout directly. This won't do any special magic with the output.
Of course in somewhat recent versions of Python 2.x (2.5 should have it, not sure about 2.4), you can use the __future__ module to enable it in your scrip...
Received an invalid column length from the bcp client for colid 6
...h match = Regex.Match(ex.Message.ToString(), pattern);
var index = Convert.ToInt32(match.Value) -1;
FieldInfo fi = typeof(SqlBulkCopy).GetField("_sortedColumnMappings", BindingFlags.NonPublic | BindingFlags.Instance);
var sortedColumns = fi.GetValue(bulkCopy);
var it...
How to migrate/convert from SVN to Mercurial (hg) on windows
...alled as well as the CollabNet Subversion Command-Line Client.
<Enable Convert Extension w/ Tortoise Hg 2>
Many thanks to bgever for pointing out in the comments that with TortoiseHg 2.0, enabling the convert extension is easier than ever. As he says
With TortoiseHG 2.0 this has been ma...
How to dump a dict to a json file?
...only see the output, try redirecting it to stdout: json.dump('SomeText', sys.stdout)
– Arindam Roychowdhury
Dec 14 '16 at 8:48
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