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explicit casting from super class to subclass
... you're essentially telling the compiler "trust me. I'm a professional, I know what I'm doing and I know that although you can't guarantee it, I'm telling you that this animal variable is definitely going to be a dog."
Since the animal isn't actually a dog (it's an animal, you could do Animal anima...
How to convert a data frame column to numeric type?
... that you should apply transform function in order to complete your task.
Now I'm about to demonstrate certain "conversion anomaly":
# create dummy data.frame
d <- data.frame(char = letters[1:5],
fake_char = as.character(1:5),
fac = factor(1:5),
...
How to secure MongoDB with username and password
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I have tried that and followed the example. now.. i can set it after I restart the server with --auth. However, when I try to login (./mongo -u theadmin -p 12345 ) I fail. I can't login.
– murvinlai
Feb 3 '11 at 0:10
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How to process SIGTERM signal gracefully?
... to use solution:
import signal
import time
class GracefulKiller:
kill_now = False
def __init__(self):
signal.signal(signal.SIGINT, self.exit_gracefully)
signal.signal(signal.SIGTERM, self.exit_gracefully)
def exit_gracefully(self,signum, frame):
self.kill_now = True
if __name_...
Differences between distribute, distutils, setuptools and distutils2?
...distutils2.
Recommendation:
If all of this is new to you, and you don't know where to start, I would recommend learning setuptools, along with pip and virtualenv, which all work very well together.
If you're looking into virtualenv, you might be interested in this question: What is the difference...
How do you clone a Git repository into a specific folder?
...cal file explorers, so be sure to show hidden files.
mv /where/it/is/right/now/* /where/I/want/it/
mv /where/it/is/right/now/.* /where/I/want/it/
The first line grabs all normal files, the second line grabs dot-files. It is also possibe to do it in one line by enabling dotglob (i.e. shopt -s dotglo...
Ruby on Rails vs ASP.NET MVC 3 for a .NET Guy? [closed]
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Now that ASP.NET MVC is open source, I wonder how quickly it will close the feature gap with RoR. I'm putting my money on MVC3 now that the developer community will have the ability to contribute to a product that is still su...
Express command not found
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FWIW official docs do mention it [now?] - expressjs.com/starter/generator.html
– Steven R. Loomis
Apr 30 '15 at 0:18
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Benefits of EBS vs. instance-store (and vice-versa) [closed]
...cost...? Also, is there any metric as to whether more people are using EBS now that it's available, considering it is still relatively new?
...
How to use localization in C#
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Console.WriteLine(Properties.strings.Hello);
It should print "Hello".
Now, add a new resource file, named "strings.fr.resx" (note the "fr" part; this one will contain resources in French). Add a string resource with the same name as in strings.resx, but with the value in French (Name="Hello", V...