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How to get maximum value from the Collection (for example ArrayList)?

There is an ArrayList which stores integer values. I need to find the maximum value in this list. E.g. suppose the arrayList stored values are : 10, 20, 30, 40, 50 and the max value would be 50 . ...
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Tactics for using PHP in a high-load site

Before you answer this I have never developed anything popular enough to attain high server loads. Treat me as (sigh) an alien that has just landed on the planet, albeit one that knows PHP and a few optimisation techniques. ...
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How to edit incorrect commit message in Mercurial? [duplicate]

I am currently using TortoiseHg (Mercurial) and accidentally committed an incorrect commit message. How do I go about editing this commit message in the repository? ...
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Dictionary returning a default value if the key does not exist [duplicate]

I find myself using the current pattern quite often in my code nowadays 4 Answers 4 ...
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How do I create a directory from within Emacs?

How exactly can I create a new directory using Emacs? What commands do I use? (If possible, please provide an example) 6 An...
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Most efficient method to groupby on an array of objects

What is the most efficient way to groupby objects in an array? 43 Answers 43 ...
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Unable to Cast from Parent Class to Child Class

I am trying to cast from a parent class to a child class but I get an InvalidCastException. The child class only has one property of type int. Does anyone know what I need to do? ...
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How to fallback to local stylesheet (not script) if CDN fails

I am linking to the jQuery Mobile stylesheet on a CDN and would like to fall back to my local version of the stylesheet if the CDN fails. For scripts the solution is well known: ...
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Simple conversion between java.util.Date and XMLGregorianCalendar

I'm looking for a simple method of converting between java.util.Date and javax.xml.datatype.XMLGregorianCalendar in both directions. ...
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Play audio with Python

How can I play audio (it would be like a 1 second sound) from a Python script? 22 Answers ...