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Java RegEx meta character (.) and ordinary dot?

In Java RegEx, how to find out the difference between . (dot) the meta character and the normal dot as we using in any sentence. How to handle this kind of situation for other meta characters too like ( * , + , \d ,...) ...
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How to use null in switch

In the code above I cant use null in switch case statement. How can I do this differently? I can't use default because then I want to do something else. ...
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How to output a multiline string in Bash?

How can I output a multipline string in Bash without using multiple echo calls like so: 7 Answers ...
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How to add text at the end of each line in Vim?

In Vim, I have the following text: 9 Answers 9 ...
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converting a .net Func to a .net Expression

Going from a lambda to an Expression is easy using a method call... 9 Answers 9 ...
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Android Reading from an Input stream efficiently

I am making an HTTP get request to a website for an android application I am making. 12 Answers ...
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The easiest way to transform collection to array?

Suppose we have a Collection<Foo> . What is the best (shortest in LoC in current context) way to transform it to Foo[] ? Any well-known libraries are allowed. ...
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Refresh a page using PHP

How can I refresh a page using PHP periodically? If I can not do it by PHP, what is the best recommended scenario? 13 Answe...
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Android WebView, how to handle redirects in app instead of opening a browser

So right now in my app the URL I'm accessing has a redirect, and when this happens the WebView will open a new browser, instead of staying in my app. Is there a way I can change the settings so the View will redirect to the URL like normal, but stay in my app instead of opening a new browser? ...
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JavaScript null check

I've come across the following code: 8 Answers 8 ...