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Difference between scaling horizontally and vertically for databases [closed]
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Horizontal scaling means that you scale by adding more machines into your pool of resources whereas Vertical scaling means that you scale by adding more power (CPU, RAM) to an existing machine.
An easy way to remember this is to think of a machine on a server rack, we add mo...
Understanding CUDA grid dimensions, block dimensions and threads organization (simple explanation) [
...ssing units, and they can run 768 threads each: then at a given moment no more than 4*768 threads will be really running in parallel (if you planned more threads, they will be waiting their turn).
Software
threads are organized in blocks. A block is executed by a multiprocessing unit.
The threads...
Is there a way to specify how many characters of a string to print out using printf()?
...c way is:
printf ("Here are the first 8 chars: %.8s\n", "A string that is more than 8 chars");
The other, often more useful, way is:
printf ("Here are the first %d chars: %.*s\n", 8, 8, "A string that is more than 8 chars");
Here, you specify the length as an int argument to printf(), which tr...
What is the difference between declarative and imperative programming? [closed]
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It seems to me that declarative programming is nothing more than a layer of abstraction.
– Drazen Bjelovuk
Nov 3 '13 at 23:45
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When should I use RequestFactory vs GWT-RPC?
..."RPC-by-concrete-type" while RequestFactory is "RPC-by-interface".
RPC is more convenient to get started with, because you write fewer lines of code and use the same class on both the client and the server. You might create a Person class with a bunch of getters and setters and maybe some simple b...
ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.al
...s perfectly for my desired functionality (The truth value of an array with more than one element is ambigous when trying to index an array).
Instead of using suggested code above, simply using a numpy.logical_and(a,b) would work. Here you may want to rewrite the code as
selected = r[numpy.logica...
Linux - Replacing spaces in the file names
... I find backticks bit hard to read when they are near quotes. The same but more readable would be for file in *; do mv "$file" $(echo $file | tr ' ' '_') ; done
– Kamil S Jaron
Jul 3 '18 at 8:58
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Websocket API to replace REST API?
...nst the general consensus and agree with you that moving to websockets for more than just realtime features is very appealing.
I am seriously considering moving my app from a RESTful architecture to more of an RPC style via websockets. This is not a "toy app", and I'm not talking about only realti...
jQuery hasClass() - check for more than one class
...that have both classes. I think Marcel is looking for elements with one or more of a number of classes.
– Giles Van Gruisen
Feb 6 '10 at 22:19
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JPA and Hibernate - Criteria vs. JPQL or HQL
...ed way to express queries in Hibernate, but sometimes Criteria Queries are more difficult to understand/build than HQL.
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