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Java 256-bit AES Password-Based Encryption

...ne use a "KeyGenerator" to generate a 256 bit key, but I would like to use my own passkey. How can I create my own key? I have tried padding it out to 256 bits, but then I get an error saying that the key is too long. I do have the unlimited jurisdiction patch installed, so thats not the problem :) ...
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What does the [Flags] Enum Attribute mean in C#?

...s are often used with bitwise operators, for example: var allowedColors = MyColor.Red | MyColor.Green | MyColor.Blue; Note that the [Flags] attribute doesn't enable this by itself - all it does is allow a nice representation by the .ToString() method: enum Suits { Spades = 1, Clubs = 2, Diamonds...
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Rails: How to get the model class name based on the controller class name?

...r name then: class HouseBuyersController < ApplicationController def my_method @model_name = self.class.name.sub("Controller", "").singularize end end ... would give you "HouseBuyer" in your @model_name instance variable. Again, this makes a huge assumption that "HouseBuyersController...
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Rails check if yield :area is defined in content_for

... I agree @eirikir, not sure what my 6 year younger self was thinking. I'm extending & leaving my answer in for those still on Rails 2.. without the unnecessary preamble ;) – Nick Oct 7 '15 at 0:52 ...
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What is the difference between --save and --save-dev?

...ion 5.0.0, the --save option is no longer necessary. If you do npm install my-package, it will add "my-package" as a dependency in the package.json file. – Martin Carel Feb 23 '18 at 23:27 ...
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What does 'super' do in Python?

...e, say doublylinkedlist then the application smoothly picks it. I can make my example more configurable by introducing config.txt and link implementation at load time. Is this the right example? If yes,How do I relate your code? See the first adv of DI in wiki. Where is any new implementation config...
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Get the first item from an iterable that matches a condition

... answers resolutely ignore the next built-in and so I assume that for some mysterious reason they're 100% focused on versions 2.5 and older -- without mentioning the Python-version issue (but then I don't see that mention in the answers that do mention the next built-in, which is why I thought it ne...
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Move branch pointer to different commit without checkout

...o a commit. There are tags, and you can also create arbitrary refs/whatevs/myref style refs yourself that are neither branches nor tags. I believe that also answers Steven Lu's question about what this might be "better". I agree branch -f is simplest if you are working with branches. ...
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How do I completely uninstall Node.js, and reinstall from beginning (Mac OS X)

My version of node is always v0.6.1-pre even after I install brew node and NVM install v0.6.19. 28 Answers ...
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How to get CSS to select ID that begins with a string (not in Javascript)?

... Thanks for the method and explanation, I've edited my question so its more clear. Out of curiosity, is there a way to match a string inside of the id's string? – guptron Jul 16 '12 at 14:12 ...