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Advantage of creating a generic repository vs. specific repository for each object?
...se GetById(int id)? How would composite keys work? I wondered if a generic selection by ID was a worthwhile abstraction. If not, what else would generic repositories be forced to express akwardly? That was the line of reasoning behind abstracting the implementation, not the interface.
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How do I replace NA values with zeros in an R dataframe?
... mutate(myCol1 = if_else(is.na(myCol1), 0, myCol1))
Note: This works per selected column, if we need to do this for all column, see @reidjax's answer using mutate_each.
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How to use Elasticsearch with MongoDB?
...ng bumped up when you update.
echo "mongodb-10gen hold" | sudo dpkg --set-selections
Start the MongoDB service.
sudo service mongodb start
Your database files default to /var/lib/mongo and your log files to /var/log/mongo.
Create a database through the mongo shell and push some dummy data int...
Rails 4 multiple image or file upload using carrierwave
How can I upload multiple images from a file selection window using Rails 4 and CarrierWave? I have a post_controller and post_attachments model. How can I do this?
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How do BitTorrent magnet links work?
...move last 'e' to compensate for bencoding
return String.Join("", bytes.Select(b => b.ToString("X2")));
}
As I understand it, this hash does not include any information on how to locate the tracker, the client needs to find this out through other means (the announce url provided). This is j...
Why is it bad style to `rescue Exception => e` in Ruby?
...IFT-ESC), go to the "processes" tab, find your process, right click it and select "End process".
If you are working with someone else's program which is, for whatever reason, peppered with these ignore-exception blocks, then putting this at the top of the mainline is one possible cop-out:
%W/INT Q...
initializer_list and move semantics
... std::forward<Ts>(ts)... };
}
};
//
// delegation function which selects the correct maker
//
template<class Array, class...Ts>
auto make(Ts&&...ts)
{
auto m = maker<Array>();
return m(std::forward<Ts>(ts)...);
}
// vectors and arrays of non-copyable types
us...
How do you specify the Java compiler version in a pom.xml file?
... Which way is "best"? This one is less verbose compared to the selected answer, but it seems sort of hidden. Even the Maven site documentation shows using the plugin.
– mkobit
Oct 15 '15 at 16:34
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ASP.NET Web Site or ASP.NET Web Application?
...e solution is very fast, and you can always click on the Web Site node and select Build, if you’ve made changes.
In an MVC Web Application project you have extra commands and dialogs for common tasks, like ‘Add View’, ‘Go To View’, ‘Add Controller’, etc. These are not available in an ...
How to add a custom right-click menu to a webpage?
... asking anyone to write the code for me, just to explain how to do it. The selected answer did that perfectly.
– I wrestled a bear once.
Apr 8 '15 at 23:48
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