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Cron jobs and random times, within given hours

I need the ability to run a PHP script 20 times a day at completely random times. I also want it to run only between 9am - 11pm. ...
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Run PHP Task Asynchronously

I work on a somewhat large web application, and the backend is mostly in PHP. There are several places in the code where I need to complete some task, but I don't want to make the user wait for the result. For example, when creating a new account, I need to send them a welcome email. But when they h...
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How do I create a constant in Python?

Is there a way to declare a constant in Python? In Java we can create constant values in this manner: 41 Answers ...
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rails + MySQL on OSX: Library not loaded: libmysqlclient.18.dylib

I'm just starting out with Ruby (and rails). I did the setup according to http://ruby.railstutorial.org/ruby-on-rails-tutorial-book#sec:ruby gems, using rvm . I have everything working well with sqlite. ...
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How do I download a binary file over HTTP?

How do I download and save a binary file over HTTP using Ruby? 9 Answers 9 ...
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Node.js on multi-core machines

Node.js looks interesting, BUT I must miss something - isn't Node.js tuned only to run on a single process and thread? 1...
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How to concatenate two strings in C++?

I have a private class variable char name[10] to which I would like to add the .txt extension so that I can open the file present in the directory. ...
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Eclipse Kepler for OS X Mavericks request Java SE 6

I have just made a clean installation of OS X Mavericks , and I have downloaded Eclipse Kepler , but if I execute it, gives me this message: ...
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Can Json.NET serialize / deserialize to / from a stream?

I have heard that Json.NET is faster than DataContractJsonSerializer, and wanted to give it a try... 5 Answers ...
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How can I ensure that a division of integers is always rounded up?

I want to ensure that a division of integers is always rounded up if necessary. Is there a better way than this? There is a lot of casting going on. :-) ...