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What is the X-REQUEST-ID http header?
...s (that a client can see) with server logs (that the server can see).
The idea of the X-Request-ID is that a client can create some random ID and pass it to the server. The server then include that ID in every log statement that it creates. If a client receives an error it can include the ID in a b...
Parallel.ForEach vs Task.Factory.StartNew
... and created tasks for it. (Then Task.WaitAll to wait for completion.) The idea is to have idle threads pick up a work package to help finish the work instead of waiting for 1-2 threads to finish up their (Parallel.For) assigned chunk.
– Tedd Hansen
Jun 15 '15 ...
When should I use the new keyword in C++?
...to have a fixed size is a bit of a simplification,but it conveys the basic idea (and I wouldn't recommend messing about with the C functions which let you be too creative with stack allocations)
– jalf
Feb 15 '13 at 22:41
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Rails: Default sort order for a rails model?
...for actions like where's limiting (filtering) the default selection (a bad idea for a default) rather than just being used for ordering results.
For where selections, just use the regular named scopes. and add that scope on in the query, e.g. Book.all.published where published is a named scope.
In ...
What data is stored in Ephemeral Storage of Amazon EC2 instance?
...g the provided settings. Filename: core/Loader.php Line Number: 346 Any ideas? This wasn't happening prior to doing this.
– James
Sep 11 '14 at 0:50
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Is it better in C++ to pass by value or pass by constant reference?
... etc...) or expensive to copy. In that paper, there is one other rule. The idea is that sometimes one wants to make a copy (in case the argument can't be modified), and sometimes one doesn't want (in case one wants to use the argument itself in the function if the argument was a temporary anyway, fo...
Why doesn't Dijkstra's algorithm work for negative weight edges?
...inimal, and thus the node that will next be selected is also minimal.
The idea of it is: If we have a vertex in open such that its cost is minimal - by adding any positive number to any vertex - the minimality will never change.
Without the constraint on positive numbers - the above assumption is n...
What is the difference between Amazon SNS and Amazon SQS?
...ld spin up reading less than the 10 messages in the batch, but you get the idea). If you posted these same 100 messages to SNS, however, 100 Lambda functions would spin up, unnecessarily increasing costs and using up your Lambda concurrency.
However, if you are still running traditional servers (lik...
Performance of Arrays vs. Lists
... each test (chk1, chk2, chk3, chk4). List/for=1303ms, Array/for=433ms. Any ideas why?
– Jon
Dec 30 '13 at 6:25
4
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UIViewController viewDidLoad vs. viewWillAppear: What is the proper division of labor?
...e the view - possibly resulting a short freeze of your app. It may be good idea to first show the user an unpopulated view with an activity indicator of some sort. When you are done with your networking, which may take a second or two (or may even fail - who knows?), you can populate the view with y...