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How to get the first column of a pandas DataFrame as a Series?
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>>> import pandas as pd
>>> df = pd.DataFrame({'x' : [1, 2, 3, 4], 'y' : [4, 5, 6, 7]})
>>> df
x y
0 1 4
1 2 5
2 3 6
3 4 7
>>> s = df.ix[:,0]
>>> type(s)
<class 'pandas.core.series.Serie...
What's the best way to validate an XML file against an XSD file?
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How do i use an ErrorHandler with the above? Is is a case of just creating the ErrorHandler and associating it with the validator? i.e. validator.SetErrorHandler() as in the example in this SO question stackoverflow.com/questions/4864681/…?
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Update Git submodule to latest commit on origin
I have a project with a Git submodule. It is from an ssh://... URL, and is on commit A. Commit B has been pushed to that URL, and I want the submodule to retrieve the commit, and change to it.
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How to implement a ConfigurationSection with a ConfigurationElementCollection
I am trying to implement a custom configuration section in a project and I keep running up against exceptions that I do not understand. I am hoping someone can fill in the blanks here.
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Tomcat: How to find out running tomcat version
...cd tomcat/lib
java -cp catalina.jar org.apache.catalina.util.ServerInfo
and that's it.
Server version: Apache Tomcat/7.0.30
Server built: May 23 2013 02:54:10
Server number: 7.0.30.0
OS Name: Linux
OS Version: 3.13.0-36-generic
Architecture: amd64
JVM Version: 1.7.0_65-b32
JVM...
What is SOA “in plain english”? [closed]
...sh what is SOA all about ? I hear SOA here, SOA there but I cannot understand exacly what it is and what is used for. Was it some simple concept and later evolved into something huge or what?
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Email address validation using ASP.NET MVC data type attributes
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Thank you @Shittu Olugbenga! But I can't understand why this doesn't work: [DataType(DataType.EmailAddress, ErrorMessage = "Error message.")]
– Wellington Zanelli
Sep 18 '14 at 12:34
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How do I specify a single test in a file with nosetests?
I have a file called test_web.py containing a class TestWeb and many methods named like test_something().
6 Answers
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What is this 'Lambda' everyone keeps speaking of?
...abstract away boilerplate code. For example loops. We're used to write for and while loops all day long. But this is code that does not be written. We could extract the code inside the loop, the most important part of the loop, and abstract away the rest:
for (var i=0; i<array.length; i++) {
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What is the difference between user and kernel modes in operating systems?
What are the differences between User Mode and Kernel Mode, why and how do you activate either of them, and what are their use cases?
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