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Java compile speed vs Scala compile speed
...scala type system is way more complicated than Java's and hence takes more CPU time.
Type inference - type inference is computationally expensive and a job that javac does not need to do at all
scalac includes an 8-bit simulator of a fully armed and operational battle station, viewable using the mag...
How can I be notified when an element is added to the page?
... here. Seriously. Don't poll the DOM every 100 milliseconds; it will waste CPU power and your users will hate you.
Since mutation events were deprecated in 2012, and you have no control over the inserted elements because they are added by someone else's code, your only option is to continuously che...
What's the difference between deque and list STL containers?
...ations. Plan to use in a O(1) arbitrarily large software managed cache for CPU pointers on GPU memory. Nods to the Linux O(1) scheduler (LRU <-> run queue per processor). The unordered_map has constant time access via hash table.
#include <iostream>
#include <list>
#include <...
Random record from MongoDB
... Apprichiate your idea. Finally, I have a great code that is much CPU & RAM friendly! Thank you
– Qais Bsharat
Mar 3 at 22:49
add a comment
| ...
How do you implement a Stack and a Queue in JavaScript?
...have a really good reason for it... while it might seem logically correct, CPUs don't operate according to human abstractions. Iterating over a datastructure that has pointers all over the place will result in cache misses in the CPU, unlike a sequential array which is highly efficient. blog.davidec...
Should I use char** argv or char* argv[]?
... says: argv is a non-null pointer pointing to at least 5 char*'s
// allows CPU to pre-load some memory.
int main(int c, char *argv[static 5]);
// says: argv is a constant pointer pointing to a char*
int main(int c, char *argv[const]);
// says the same as the previous one
int main(int c, char ** c...
Why doesn't .NET/C# optimize for tail-call recursion?
...what I know.
Sometimes tailcall is a performance win-win. It can save CPU. jmp is
cheaper than call/ret It can save stack. Touching less stack makes for
better locality.
Sometimes tailcall is a performance loss, stack win.
The CLR has a complex mechanism in which to pass more paramet...
Pandas read_csv low_memory and dtype options
...loading (but none after loading is complete) and theoretically saving some cpu cycles (which you won't notice since disk I/O will be the bottleneck.
– firelynx
Sep 1 '16 at 11:22
5...
How to send an object from one Android Activity to another using Intents?
...ne process you're mucking about in. reasons why it's not good: memory use, cpu use, battery use. the last one especially made the design choices with intents quite perplexing in hindsight. there are people who insist that they're a good idea, usually because "google said so".
–...
Is there a way to access an iteration-counter in Java's for-each loop?
... invoke constructor, scan sooner with GC and finalize. This not only loads CPU but also invalidates the cache all the time. Nothing like this is necessary for local variables. Why do you say that this is "the same"?
– Val
Sep 1 '13 at 14:03
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