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What is the difference between setUp() and setUpClass() in Python unittest?

...erence (as noted in the answer by Benjamin Hodgson) is that setUpClass is called only once and that is before all the tests, while setUp is called immediately before each and every test. (NB: The same applies to the equivalent methods in other xUnit test frameworks, not just Python's unittest.) From...
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Store query result in a variable using in PL/pgSQL

...s, as @Pavel commented. I shortened the syntax with a table alias additionally. Update: I removed my code example and suggest to use IF EXISTS() instead like provided by @Pavel. share | improve thi...
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Android Studio/Intellij Idea: “Table of Contents” for a class

...ble of Contents" for a class. I apologize for not knowing exactly what to call it. But what I am referring to is the dropdown menu in eclipse that lists all the methods, interfaces, classes and so on that are in that class file. This then allows you to jump to that position. This view is when you ar...
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What does the line “#!/bin/sh” mean in a UNIX shell script?

... It's called a shebang, and tells the parent shell which interpreter should be used to execute the script. e.g. #!/usr/bin/perl <--perl script' #!/usr/bin/php <-- php script #!/bin/false <--- do-nothing script, because ...
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How can I output UTF-8 from Perl?

...sults. I'm using Mac OS X 10.5 (Leopard), and I'm editing with TextMate. All of my settings for both my editor and operating system are defaulted to writing files in utf-8 format. ...
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What makes a keychain item unique (in iOS)?

...the keychain access group (field kSecAttrAccessGroup) is an added field to all these primary keys. share | improve this answer | follow | ...
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.NET WebAPI Serialization k_BackingField Nastiness

...rk with Web API. Just leave your model as is, and Web API would serialize all the public properties for you. Only if you want to have more control about what's included, you then decorate your class with [DataContract] and the properties to be included with [DataMember] (because both DCS and JSON...
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how to draw smooth curve through N points using javascript HTML5 canvas?

...he resulting line is not smooth. How can I produce a single curve between all the gathered points? 11 Answers ...
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Saving an Object (Data persistence)

...ics. cPickle (or _pickle) vs pickle It's almost always preferable to actually use the cPickle module rather than pickle because the former is written in C and is much faster. There are some subtle differences between them, but in most situations they're equivalent and the C version will provide gr...
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Any way to force strict mode in node?

...newer the --use_strict flag works as expected. – TooTallNate Feb 5 '13 at 5:52 21 Note that --use...