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Using Regex to generate Strings rather than match them

...elps me to generate loads of data for performance testing. It would be really cool to be able to specify a regex for Strings so that my generator spits out things which match this. Is there something out there already baked which I can use to do this? Or is there a library which gets me most of...
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Is there an MD5 Fixed Point where md5(x) == x?

...ng. Assuming that the MD5 sum of any string is uniformly distributed over all possible sums, then the probability that any given 128-bit string is a fixed point is 1/2128. Thus, the probability that no 128-bit string is a fixed point is (1 − 1/2128)2128, so the probability that there is a fixed ...
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Capistrano - clean up old releases

Usually when using capistrano, I will go and manually delete old releases from a deployed application. I understand that you can run cap deploy:cleanup but that still leaves 5 releases. Is this it's intended purpose? Is there another way to cleanup old releases to just 1 previous deploy? ...
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What is the difference between trie and radix trie data structures?

...ed only five nodes. In the picture above nodes are the asterisks. So, overall, a radix tree takes less memory, but it is harder to implement. Otherwise the use case of both is pretty much the same. share | ...
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Trying to embed newline in a variable in bash [duplicate]

...ar ) # Do not use double quotes "$var" echo "$p" Output is the same for all a b c Special thanks to contributors of this answer: kevinf, Gordon Davisson, l0b0, Dolda2000 and tripleee. EDIT See also BinaryZebra's answer providing many details. Abhijeet Rastogi's answer and Dimitry's answer...
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Refresh a page using JavaScript or HTML [duplicate]

... no, i did not test them all – epoch Jan 10 '14 at 8:06 13 ...
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Why use @PostConstruct?

In a managed bean, @PostConstruct is called after the regular Java object constructor. 5 Answers ...
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How to modify a global variable within a function in bash?

...alise that if you just run the function without assigning it to a variable all the global variables within it will update. Instead of returning a string array, why not just update the string array in the function then assign it to another variable after the function has finished ? ...
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In C#, what is the difference between public, private, protected, and having no access modifier?

All my college years I have been using public , and would like to know the difference between public , private , and protected ? ...
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What Does 'Then' Really Mean in CasperJS

... then() basically adds a new navigation step in a stack. A step is a javascript function which can do two different things: waiting for the previous step - if any - being executed waiting for a requested url and related page to load ...