大约有 5,476 项符合查询结果（耗时：0.0179秒） [XML]
How expensive is RTTI?
...elp.
I was doing a quick test using this:
GCC Clock() + XCode's Profiler.
100,000,000 loop iterations.
2 x 2.66 GHz Dual-Core Intel Xeon.
The class in question is derived from a single base class.
typeid().name() returns "N12fastdelegate13FastDelegate1IivEE"
5 Cases were tested:
1) dynamic_cast<...
Why do people say there is modulo bias when using a random number generator?
...andom bits yields 8 possible outcomes:
000 = 0, 001 = 1, 010 = 2, 011 = 3
100 = 4, 101 = 5, 110 = 6, 111 = 7
We can reduce the size of the outcome set to exactly 6 by taking the value modulo 6, however this presents the modulo bias problem: 110 yields a 0, and 111 yields a 1. This die is loaded.
...
Text size and different android screen sizes
I know, it was discussed already 1000 times, but I can't adjust the text size for different screen sizes. I try to use 'sp' as size units in my custom style:
...
Why use prefixes on member variables in C++ classes
...les.
Compare this unrealistically simple example:
for (int i = 0; i < 100; i++)
for (int j = 0; j < 5; j++)
list[i].score += other[j].score;
(which is hard to read and often leads to use of "i" where "j" was intended)
with:
for (int iCompany = 0; iCompany < numCompanies; i...
Parameterize an SQL IN clause
...
Yes, this is a table scan. Great for 10 rows, lousy for 100,000.
– Will Hartung
Dec 3 '08 at 16:48
17
...
Which kind of pointer do I use when?
...
+100
Shared ownership:
The shared_ptr and weak_ptr the standard adopted are pretty much the same as their Boost counterparts. Use them wh...
What are the differences between NP, NP-Complete and NP-Hard?
...to post it here. Can you please help me here? stackoverflow.com/questions/21005651/…
– Srikanth
Jan 8 '14 at 21:09
I...
Lock-free multi-threading is for real threading experts
...
100
Current "lock-free" implementations follow the same pattern most of the time:
*read some sta...
How to automatically generate a stacktrace when my program crashes
...00000 ST(7) 0000
0000000000000000
Backtrace:
/lib/libSegFault.so[0xb7f9e100]
??:0(??)[0xb7fa3400]
/usr/include/c++/4.3/bits/stl_queue.h:226(_ZNSt5queueISsSt5dequeISsSaISsEEE4pushERKSs)[0x805647a]
/home/dbingham/src/middle-earth-mud/alpha6/src/engine/player.cpp:73(_ZN6Player5inputESs)[0x805377c]
/...
What is the best way to stop people hacking the PHP-based highscore table of a Flash game
... _fin = "0" + _s.toString();
}
if(_s >= 100 ) {
_fin = _s.toString();
}
return _fin;
}
}//end
}
Then I send the variable among with other fake-vars and it just get's lost among the way... It is a l...