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Standard deviation of a list
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Since Python 3.4 / PEP450 there is a statistics module in the standard library, which has a method stdev for calculating the standard deviation of iterables like yours:
>>> A_rank = [0.8, 0.4, 1.2, 3.7, 2.6, 5.8]
>>> import statistics
>>> statistics.stdev(A_rank)
2.0634...
Java JDBC - How to connect to Oracle using Service Name instead of SID
I have a Java application that uses JDBC (via JPA) that was connecting to a development database using hostname, port and Oracle SID, like this:
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Python __str__ and lists
...List.toString(), it will automatically call the toString() method on each object inside the List. For example, if my list contains objects o1, o2, and o3, list.toString() would look something like this:
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Only initializers, entity members, and entity navigation properties are supported
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Entity is trying to convert your Paid property to SQL and can't because it's not part of the table schema.
What you can do is let Entity query the table with no Paid filter and then filter out the not Paid ones.
public ActionResult Index()
{
var debts = storeDB.Orders
//.Wh...
How to work with complex numbers in C?
How can I work with complex numbers in C? I see there is a complex.h header file, but it doesn't give me much information about how to use it. How to access real and imaginary parts in an efficient way? Is there native functions to get module and phase?
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How to do a case sensitive search in WHERE clause (I'm using SQL Server)?
I want to do a case sensitive search in my SQL query. But by default, SQL Server does not consider the case of the strings.
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IntelliJ does not show project folders
...it so that the folders and packages are shown again?
I don't have any clue because I didn't change any options!
30 Answers
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Adding div element to body or document in JavaScript
I am creating a light box in pure JavaScript. For that I am making an overlay. I want to add this overlay to body but I also want to keep the content on the page. My current code adds the overlay div but it also removes the current contents in body. How to add div element and keep contents on body?...
Selenium: FirefoxProfile exception Can't load the profile
Per this previous question I updated Selenium to version 2.0.1
But now I have another error, even when the profile files exist under /tmp/webdriver-py-profilecopy :
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Setting the default value of a DateTime Property to DateTime.Now inside the System.ComponentModel De
... for a DateTime property using the System.ComponentModel DefaultValue Attribute?
21 Answers
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