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How many parameters are too many? [closed]
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A good rule-of-thumb is the number of CPU registers, because anymore and the compiler will be forced to allocate them on the stack.
– Michaelangel007
Mar 31 '16 at 14:10
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Why can't enum's constructor access static fields?
...e problem solved via a nested class. Pros: it's shorter and also better by CPU consumption. Cons: one more class in JVM memory.
enum Day {
private static final class Helper {
static Map<String,Day> ABBR_TO_ENUM = new HashMap<>();
}
Day(String abbr) {
this.a...
What's the purpose of the LEA instruction?
...nVoigt I used to say that, because I'm an old bloke :-) Traditionally, x86 CPUs did use the addressing units for this, agreed. But the "separation" has become very blurry these days. Some CPUs no longer have dedicated AGUs at all, others have chosen not to execute LEA on the AGUs but on the ordinary...
Convert a String In C++ To Upper Case
...ry/cache effects: data is hot in L1 cache the whole time, and we're purely CPU-bound.
boost::to_upper_copy<char*, std::string>(): 198.0s. Yes, Boost 1.58 on Ubuntu 15.10 is really this slow. I profiled and single-stepped the asm in a debugger, and it's really, really bad: there's a dynam...
list every font a user's browser can display
...ch fiability in showing content or parsing page in manner to not fill much cpu
– Constantin
Jul 24 at 8:41
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When to use reinterpret_cast?
...ic_cast stands for.
On the other hand, when you call reinterpret_cast the CPU does not invoke any calculations. It just treats a set of bits in the memory like if it had another type. So when you convert int* to float* with this keyword, the new value (after pointer dereferecing) has nothing to do ...
Wrapping synchronous code into asynchronous call
...ous API for it.
I'll proceed with the assumption that your "service" is a CPU-bound operation that must execute on the same machine as the web server.
If that's the case, then the next thing to evaluate is another assumption:
I need the request to execute faster.
Are you absolutely sure that...
Why is arr = [] faster than arr = new Array?
..., the VM knows we want an array; with new Array, the VM needs to use extra CPU cycles to figure out what new Array actually does.
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What is the best way to compare floats for almost-equality in Python?
...red 0.03 into the system, that's not really the number that made it to the CPU.
– Andrew White
Sep 21 '15 at 1:31
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When should I choose Vector in Scala?
...sically exist together on RAM in groups of 32, which more fully fit in the CPU cache... so there's less cache miss
– richizy
Aug 9 '16 at 1:25
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