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How does lucene index documents?

I read some document about Lucene; also I read the document in this link ( http://lucene.sourceforge.net/talks/pisa ). 4 An...
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Margin-Top not working for span element?

Can someone tell me what I coded wrong? Everything is working, the only thing is that there is no margin at the top. 5 Answ...
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Arrays vs Vectors: Introductory Similarities and Differences [closed]

What are the differences between an array and a vector in C++? An example of the differences might be included libraries, symbolism, abilities, etc. ...
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How do I make many-to-many field optional in Django?

When you have a many-to-many relationship ( related_name , not through ) and you are trying to use the admin interface you are required to enter one of the relationships even though it does not have to exist for you to create the first entry. ...
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Select objects based on value of variable in object using jq

I have the following json file: 3 Answers 3 ...
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What's the standard way to work with dates and times in Scala? Should I use Java types or there are

What's the standard way to work with dates and times in Scala? Should I use Java types such as java.util.Date or there are native Scala alternatives? ...
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How to get filename without extension from file path in Ruby

How can I get the filename from a file path in Ruby? 9 Answers 9 ...
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Why {} + {} is NaN only on the client side? Why not in Node.js?

While [] + [] is an empty string, [] + {} is "[object Object]" , and {} + [] is 0 . Why is {} + {} NaN? 1 Answer ...
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How can I get the timezone name in JavaScript?

I know how to get the timezone offset, but what I need is the ability to detect something like "America/New York." Is that even possible from JavaScript or is that something I am going to have to guestimate based on the offset? ...
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Git command to display HEAD commit id?

What command can I use to print out the commit id of HEAD? 9 Answers 9 ...