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What characters are valid for JavaScript variable names?

Which characters can be used for naming a JavaScript variable? 12 Answers 12 ...
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Android emulator-5554 offline

I'm having a problem with emulator-5554, it keeps telling me it is offline. 37 Answers ...
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Deleting an element from an array in PHP

Is there an easy way to delete an element from an array using PHP, such that foreach ($array) no longer includes that element? ...
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Why is isNaN(null) == false in JS?

This code in JS gives me a popup saying "i think null is a number", which I find slightly disturbing. What am I missing? 8 ...
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How to format a Java string with leading zero?

Here is the String, for example: 21 Answers 21 ...
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Efficient way to determine number of digits in an integer

What is a very efficient way of determining how many digits there are in an integer in C++? 28 Answers ...
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How is a CRC32 checksum calculated?

Maybe I'm just not seeing it, but CRC32 seems either needlessly complicated, or insufficiently explained anywhere I could find on the web. ...
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adding noise to a signal in python

I want to add some random noise to some 100 bin signal that I am simulating in Python - to make it more realistic. 7 Answer...
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httpd: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for Se

I tried to restart my Apache server on CentOS 5.0 and got this message: 11 Answers 11 ...
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How to get the type of a variable in MATLAB?

Does MATLAB have a function/operator that indicates the type of a variable (similar to the typeof operator in JavaScript)? ...