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Generate random string/characters in JavaScript

I want a 5 character string composed of characters picked randomly from the set [a-zA-Z0-9] . 77 Answers ...
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Get exit code of a background process

I have a command CMD called from my main bourne shell script that takes forever. 12 Answers ...
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Text Progress Bar in the Console [closed]

I wrote a simple console app to upload and download files from an FTP server using the ftplib. 31 Answers ...
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Count number of matches of a regex in Javascript

I wanted to write a regex to count the number of spaces/tabs/newline in a chunk of text. So I naively wrote the following:- ...
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How to synchronize a static variable among threads running different instances of a class in Java?

I know that using the synchronize keyword before a method brings synchronization to that object. That is, 2 threads running the same instance of the object will be synchronized. ...
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Dictionaries and default values

Assuming connectionDetails is a Python dictionary, what's the best, most elegant, most "pythonic" way of refactoring code like this? ...
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How can I check if a URL exists via PHP?

How do I check if a URL exists (not 404) in PHP? 22 Answers 22 ...
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Browsers' default CSS for HTML elements

Where can I find a browser's default CSS for HTML elements? 4 Answers 4 ...
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How to update gradle in android studio?

I installed Android Studio 0.1.9. Today I got and update to version 0.2 and of course I updated. After the installation I restarted Android Studio but now I get this message: ...
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How to check whether a string is Base64 encoded or not

I want to decode a Base64 encoded string, then store it in my database. If the input is not Base64 encoded, I need to throw an error. ...