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RabbitMQ and relationship between channel and connection
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I think this reference to the Java Client API is now outdated and in fact today's reference directly contradicts the quote in this answer. Today's reference says "Channel instances must not be shared between threads".
– Edwin Dalorzo
J...
What is the difference between “JPG” / “JPEG” / “PNG” / “BMP” / “GIF” / “TIFF” Image?
...Wikipedia page I referenced, and it supports RLE, PNG and JPEG. (I didn't know it supported PNG and JPEG content - learned something new!)
– coobird
Jan 8 '09 at 1:04
2
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Scala: What is a TypeTag and how do I use it?
All I know about TypeTags is that they somehow replaced Manifests. Information on the Internet is scarce and doesn't provide me with a good sense of the subject.
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Any difference between First Class Function and High Order Function
...pass a function as an argument to another function. The latter function is now "higher order". It is a function that takes a function as an argument.
The canonical example is "map"
map :: (a -> b) -> [a] -> [b]
map f [] = []
map f (x:xs) = f x : map f xs
That is, it takes a function...
Pointers vs. values in parameters and return values
...base interfaces or serializers need to append to a slice whose type isn't known at compile time. They sometimes accept a pointer to a slice in an interface{} parameter.
Maps, channels, strings, and function and interface values, like slices, are internally references or structures that contain ref...
What does MVW stand for?
...but over time and thanks to many refactorings
and api improvements, it's now closer to MVVM – the $scope object
could be considered the ViewModel that is being decorated by a
function that we call a Controller.
Being able to categorize a framework and put it into one of the MV*
bucket...
Map vs Object in JavaScript
... track of size for an Object.
Use maps over objects when keys are unknown until run time, and when
all keys are the same type and all values are the same type.
Use objects when there is logic that operates on individual elements.
https://developer.mozilla.org/en-US/docs/Web/JavaScript...
LINQ - Full Outer Join
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I don't know if this covers all cases, logically it seems correct. The idea is to take a left outer join and right outer join then take the union of the results.
var firstNames = new[]
{
new { ID = 1, Name = "John" },
new { I...
How to generate random SHA1 hash to use as ID in node.js?
... unique value in all but the most insane parallel computing situations. I know its silly and randomBytes(20) is going to be unique, but its just a confidence we can have because we may not be familiar with internals of random generation of another library.
– Dmitri R117
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Is either GET or POST more secure than the other?
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If your site performs sensitive operations, you really need someone who knows what they’re doing, because this can’t be covered in a single answer. You need to use HTTPS, HSTS, CSP, mitigate SQL injection, script injection (XSS), CSRF, and a gazillion of other things that may be specific to yo...