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How to avoid isset() and empty()

... For those interested, I have expanded this topic into a small article, which provides the below information in a somewhat better structured form: The Definitive Guide To PHP's isset And empty IMHO you should think about not just making the app "E_NOTICE compatible", but restructu...
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What's the difference between unit, functional, acceptance, and integration tests? [closed]

...these are slightly wooly and others may disagree. Unit Tests Tests the smallest unit of functionality, typically a method/function (e.g. given a class with a particular state, calling x method on the class should cause y to happen). Unit tests should be focussed on one particular feature (e.g., c...
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Django filter queryset __in for *every* item in list

... Summary: One option is, as suggested by jpic and sgallen in the comments, to add .filter() for each category. Each additional filter adds more joins, which should not be a problem for small set of categories. There is the aggregation approach. This query would be shorter and...
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ASP.NET MVC How to convert ModelState errors to json

How do you get a list of all ModelState error messages? I found this code to get all the keys: ( Returning a list of keys with ModelState errors ) ...
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Calling clojure from java

Most of the top google hits for "calling clojure from java" are outdated and recommend using clojure.lang.RT to compile the source code. Could you help with a clear explanation of how to call Clojure from Java assuming you have already built a jar from the Clojure project and included it in the cl...
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Checking network connection

...t have a working internet connection, the DNS lookup itself may block the call to urllib_request.urlopen for more than a second. Thanks to @rzetterberg for pointing this out. If the fixed IP address above is not working, you can find a current IP address for google.com (on unix) by running % dig...
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Java equivalent to #region in C#

... Actually this can be achieved. If you scroll down on this post "Yaqub Ahmad" explains how to get this functionality. Also here is a link (kosiara87.blogspot.com/2011/12/…) that shows you how to add it to your existing eclipse e...
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zsh compinit: insecure directories

... This is definitely the best solution for me. I installed zsh and zsh-completions with Homebrew, so obviously did not want to change it to be owned by root. – katy lavallee Oct 18 '16 at 18:10 ...
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top -c command in linux to filter processes listed based on processname

Top lists all the processes, there are good options to filter the processes by username by using the option -u but I am wondering if there is any easy way to filter the processes based on processname listed under COMMAND column of the top output. ...
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How to plot two histograms together in R?

...ers. Each data frame has a single numeric column which lists the length of all measured carrots (total: 100k carrots) and cucumbers (total: 50k cucumbers). ...