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How do you cast a List of supertypes to a List of subtypes?
...termediate wildcard type and it will be allowed (since you can cast to and from wildcard types, just with an unchecked warning):
List<TestB> variable = (List<TestB>)(List<?>) collectionOfListA;
share
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How can you hide database output in Rails console?
In newer version of Rails, I'm guessing from 3 up, database queries are output to the console. This is useful most of the time, but how can you hide it when you do not want to see it?
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How does inline Javascript (in HTML) work?
... use the variable event to retrieve the event (and the originating element from it via event.target), from my inline JS snippet! Cool.
– Steven Lu
May 15 '12 at 20:03
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Why should I use version control? [closed]
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Even if you work alone you can benefit from source control. Among others, for these reasons:
You don't lose anything. I never again commented out code. I simply delete it. It doesn't clutter my screen, and it isn't lost. I can recover it by checking out an old c...
How to determine a user's IP address in node
How can I determine the IP address of a given request from within a controller? For example (in express):
19 Answers
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What's the recommended way to extend AngularJS controllers?
...ntroller="complexController as C">
<span><b>Origin from Controller:</b> {{C.getOrigin()}}</span>
</div>
</div>
Although $document is not passed into 'simpleController' when it is created by 'complexController' $document is injected for us....
Why is the Fibonacci series used in agile planning poker? [closed]
...xponential estimation scale. The reason an exponential scale is used comes from Information Theory.
The information that we obtain out of estimation grows much slower than the precision of estimation. In fact it grows as a logarithmic function. This is the reason for the higher uncertainty for larg...
Looping in a spiral
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C++ anyone? Quick translation from python, posted for completeness
void Spiral( int X, int Y){
int x,y,dx,dy;
x = y = dx =0;
dy = -1;
int t = std::max(X,Y);
int maxI = t*t;
for(int i =0; i < maxI; i++){
if ((-X/2 <= ...
GitHub authentication failing over https, returning wrong email address
Initiating a push or any other action with GitHub from the command line (over https, not ssh) that calls for the username and password not only fails but, when it does, it returns
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Amazon SimpleDB vs Amazon DynamoDB
...This is addressed by the respective FAQ Q: How does Amazon DynamoDB differ from Amazon SimpleDB? Which should I use? (hash link no longer works, but use in-page Find to locate question within page) to some extent already, with the most compact summary at the end of the paragraph:
While SimpleDB ...