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If list index exists, do X

In my program, user inputs number n , and then inputs n number of strings, which get stored in a list. 12 Answers ...
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How can I parse a string with a comma thousand separator to a number?

I have 2,299.00 as a string and I am trying to parse it to a number. I tried using parseFloat , which results in 2. I guess the comma is the problem, but how would I solve this issue the right way? Just remove the comma? ...
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Java: Difference between PrintStream and PrintWriter

What is the difference between PrintStream and PrintWriter ? They have many methods in common due to which I often mix these two classes up. Moreover, I think we can use them for exactly the same things. But there has to be a difference, otherwise, there would have been only one class. ...
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Is there a way to simulate the C++ 'friend' concept in Java?

I would like to be able to write a Java class in one package which can access non-public methods of a class in another package without having to make it a subclass of the other class. Is this possible? ...
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Build a Basic Python Iterator

How would one create an iterative function (or iterator object) in python? 10 Answers ...
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What's the difference between SoftReference and WeakReference in Java?

What's the difference between java.lang.ref.WeakReference and java.lang.ref.SoftReference ? 12 Answers ...
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What does {0} mean when initializing an object?

When {0} is used to initialize an object, what does it mean? I can't find any references to {0} anywhere, and because of the curly braces Google searches are not helpful. ...
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Bootstrap 3: Keep selected tab on page refresh

I am trying to keep selected tab active on refresh with Bootstrap 3 . Tried and checked with some question already been asked here but none of work for me. Don't know where I am wrong. Here is my code ...
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jQuery object equality

How do I determine if two jQuery objects are equal? I would like to be able to search an array for a particular jQuery object. ...
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How Drupal works? [closed]

Could someone provide a architectural overview of the Drupal 7 control flow? Perhaps in the sense of a flowchart about how a page gets generated. What additional resources would you suggest consulting with regards to how Drupal works? ...