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Given final block not properly padded
I am trying to implement password based encryption algorithm, but I get this exception:
4 Answers
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How do you write a migration to rename an ActiveRecord model and its table in Rails?
... my Rails app. Is there any way to use a migration to rename a model and its corresponding table?
5 Answers
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Retargeting solution from .Net 4.0 to 4.5 - how to retarget the NuGet packages?
...y targeting .NET 4.0 in VS2010 to VS2012 and now I would like to re-target it to .Net 4.5
5 Answers
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How to publish a website made by Node.js to Github Pages?
I made a website using Node.js as the server. As I know, the node.js file should start working by typing commands in terminal, so I'm not sure if Github Pages supports node.js-hosting. So what should I do?
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Which @NotNull Java annotation should I use?
...nar) to avoid NullPointerExceptions. Many of the tools seem incompatible with each others' @NotNull / @NonNull / @Nonnull annotation and listing all of them in my code would be terrible to read. Any suggestions of which one is the 'best'? Here is the list of equivalent annotations I've found:
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Check if at least two out of three booleans are true
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Rather than writing:
if (someExpression) {
return true;
} else {
return false;
}
Write:
return someExpression;
As for the expression itself, something like this:
boolean atLeastTwo(boolean a, boolean b, boolean c) {
re...
Waiting until two async blocks are executed before starting another block
When using GCD, we want to wait until two async blocks are executed and done before moving on to the next steps of execution. What is the best way to do that?
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Adding 'serial' to existing column in Postgres
I have a small table (~30 rows) in my Postgres 9.0 database with an integer ID field (the primary key) which currently contains unique sequential integers starting at 1, but which was not created using the 'serial' keyword.
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Streaming a video file to an html5 video player with Node.js so that the video controls continue to
...s the right way to handle streaming a video file to an html5 video player with Node.js so that the video controls continue to work?
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How do I use arrays in C++?
C++ inherited arrays from C where they are used virtually everywhere. C++ provides abstractions that are easier to use and less error-prone ( std::vector<T> since C++98 and std::array<T, n> since C++11 ), so the need for arrays does not arise quite as often as it does in C. However, ...