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Round to at most 2 decimal places (only if necessary)

I'd like to round at most 2 decimal places, but only if necessary . 79 Answers 79 ...
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Java List.add() UnsupportedOperationException

I try to add objects to a List<String> instance but it throws an UnsupportedOperationException . Does anyone know why? ...
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What is the difference between 'E', 'T', and '?' for Java generics?

I come across Java code like this: 6 Answers 6 ...
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Prevent scrolling of parent element when inner element scroll position reaches top/bottom? [duplicat

I have a little "floating tool box" - a div with position:fixed; overflow:auto . Works just fine. 30 Answers ...
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Disabling Minimize & Maximize On WinForm?

WinForms have those three boxes in the upper right hand corner that minimize, maximize, and close the form. What I want to be able to do is to remove the minimize and maximize, while keeping the close. ...
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make arrayList.toArray() return more specific types

So, normally ArrayList.toArray() would return a type of Object[] ....but supposed it's an Arraylist of object Custom , how do I make toArray() to return a type of Custom[] rather than Object[] ? ...
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How can I detect when the mouse leaves the window?

I want to be able to detect when the mouse leaves the window so I can stop events from firing while the user's mouse is elsewhere. ...
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Refresh all files in buffer from disk in vim

The command to refresh a file from version on disk is :e! 5 Answers 5 ...
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curl_exec() always returns false

I have written this simple piece of code : 3 Answers 3 ...
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How to run Ruby code from terminal?

I need to run a few lines of Ruby code from terminal, but I can't find the needed parameter for it. 2 Answers ...