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Why are primes important in cryptography?

... public, and everyone can use it to encrypt messages to you, but only you know the prime factors and can decrypt the messages. Everyone else would have to factor the number, which takes too long to be practical, given the current state of the art of number theory. ...
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Converting 'ArrayList to 'String[]' in Java

...gpost reveals that due to JVM optimizations, using new String[0] is better now. share | improve this answer | follow | ...
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Copy the entire contents of a directory in C#

... Much easier //Now Create all of the directories foreach (string dirPath in Directory.GetDirectories(SourcePath, "*", SearchOption.AllDirectories)) Directory.CreateDirectory(dirPath.Replace(SourcePath, DestinationPath)); //Copy al...
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How to pass arguments into a Rake task with environment in Rails? [duplicate]

...rake 'webp:convert["hello", "world"]' .. Warning: I haven't tried this one now, but it should work. – inger Sep 18 '13 at 14:08  |  show 8 mor...
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Is there a way to change context to iframe in javascript console?

... Note that this dropdown is now at the top of the console, rather than the bottom. – Muhd May 8 '14 at 18:51 1 ...
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The 'json' native gem requires installed build tools

... 1.9.2p180 (2011-02-18) [i386-mingw32] installed on my windows 7 machine. Now I tried to install the JSON gem using the command, "gem install json" and got the following error. ...
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Differences between MySQL and SQL Server [closed]

... I am sure you know more than me. I am just a beginner can you please let me know if I am mistaken? Is there anything exact as MS SQL? – Unbreakable Jul 5 '15 at 12:25 ...
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Why is using the JavaScript eval function a bad idea?

...val is currently and historically massively over-used by people who don't know what they're doing. That includes people writing JavaScript tutorials, unfortunately, and in some cases this can indeed have security consequences - or, more often, simple bugs. So the more we can do to throw a question m...
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How to prevent favicon.ico requests?

...ater, maybe after the index file has loaded the header(somebody with more knowledge of the internals of browsers please comment). Not having a favicon has potential side effects, just google it, or: stackoverflow.com/questions/4269695/… – juanheyns Dec 22 '1...
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Passing route control with optional parameter after root in express?

...after in URL construction, I gave a '?' symbol after batchNo '/:batchNo?' Now I can call with only categoryId and productId or with all three-parameter. http://127.0.0.1:3000/api/v1/tours/5/10 //or http://127.0.0.1:3000/api/v1/tours/5/10/8987 ...