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What is the difference in maven between dependency and plugin tags in pom xml?

I'm new to the maven tool, I have made a project with Spring and Hibernate and they are configured in pom.xml as plugins, but JUnit is tagged under dependency. My question is what is the logic behind one as a plugin and one as dependency ? ...
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Loop through an array of strings in Bash?

I want to write a script that loops through 15 strings (array possibly?) Is that possible? 19 Answers ...
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Split string into an array in Bash

In a Bash script I would like to split a line into pieces and store them in an array. 22 Answers ...
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Understanding generators in Python

I am reading the Python cookbook at the moment and am currently looking at generators. I'm finding it hard to get my head round. ...
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How can I check for “undefined” in JavaScript? [duplicate]

What is the most appropriate way to test if a variable is undefined in JavaScript? 16 Answers ...
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What would a “frozen dict” be?

I guess it could be something like collections.namedtuple , but that is more like a frozen-keys dict (a half-frozen dict). Isn't it? ...
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List comprehension vs. lambda + filter

I happened to find myself having a basic filtering need: I have a list and I have to filter it by an attribute of the items. ...
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List comprehension rebinds names even after scope of comprehension. Is this right?

Comprehensions are having some unexpected interactions with scoping. Is this the expected behavior? 6 Answers ...
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A dependent property in a ReferentialConstraint is mapped to a store-generated column

I get this error when writing to the database: 13 Answers 13 ...
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In Django, how do I check if a user is in a certain group?

I created a custom group in Django's admin site. 12 Answers 12 ...