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Performance of foreach, array_map with lambda and array_map with static function

What's the performance difference (if there is any) between these three approaches, both used to transform an array to another array? ...
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How can you profile a Python script?

Project Euler and other coding contests often have a maximum time to run or people boast of how fast their particular solution runs. With Python, sometimes the approaches are somewhat kludgey - i.e., adding timing code to __main__ . ...
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How to calculate the angle between a line and the horizontal axis?

In a programming language (Python, C#, etc) I need to determine how to calculate the angle between a line and the horizontal axis? ...
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How do I do base64 encoding on iOS?

I'd like to do base64 encoding and decoding, but I could not find any support from the iPhone SDK . How can I do base64 encoding and decoding with or without a library? ...
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Days between two dates? [duplicate]

What's the shortest way to see how many full days have passed between two dates? Here's what I'm doing now. 4 Answers ...
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Vagrant's port forwarding not working [closed]

I'm running into a small problem at the end of the Getting Started guide for vagrant . I'm working on a CentOS basebox that has Apache2 running (provisioning via Puppet). I've set up port forwarding for web requests using the following line in Vagrantfile : ...
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Inline elements shifting when made bold on hover

I created a horizontal menu using a HTML lists and CSS. Everything works as it should except when you hover over the links. You see, I created a bold hover state for the links, and now the menu links shift because of the bold size difference. ...
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How to create GUID / UUID?

I'm trying to create globally-unique identifiers in JavaScript. I'm not sure what routines are available on all browsers, how "random" and seeded the built-in random number generator is, etc. ...
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How can I remove the decimal part from JavaScript number?

I have the results of a division and I wish to discard the decimal portion of the resultant number. 14 Answers ...
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How can I convert a zero-terminated byte array to string?

I need to read [100]byte to transfer a bunch of string data. 13 Answers 13 ...