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Difference between abstraction and encapsulation?
What is the precise difference between encapsulation and abstraction?
39 Answers
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How to apply bindValue method in LIMIT clause?
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– Madara's Ghost
Nov 15 '12 at 19:32
4
@Ross I cannot specifically answer this- but I can point...
Why would introducing useless MOV instructions speed up a tight loop in x86_64 assembly?
...n. To find out how memory stores work, please refer to the Intel 64 and IA-32 Architectures Optimization Reference Manual.
Breaking the false dependencies
Although this does not exactly refer to your case, but sometimes using 32-bit mov operations under the 64-bit processor (as in your case) are u...
IN vs OR in the SQL WHERE Clause
...000, 2000, 3000, 4000, 5000, 6000, 7000, 8000, 9000);
1 row fetched in 0.0032 (1.2679 seconds)
SELECT COUNT(*) FROM t_inner WHERE val = 1000 OR val = 2000 OR val = 3000 OR val = 4000 OR val = 5000 OR val = 6000 OR val = 7000 OR val = 8000 OR val = 9000;
1 row fetched in 0.0026 (1.7385 seconds)
So...
CALL command vs. START with /WAIT option
...ere is a useful difference between call and start /wait when calling regsvr32.exe /s for example, also referenced by Gary in
in his answer to how-do-i-get-the-application-exit-code-from-a-windows-command-line
call regsvr32.exe /s broken.dll
echo %errorlevel%
will always return 0 but
start /wait...
How to get line count of a large file cheaply in Python?
...simplecount : 0.634400033951
bufcount : 0.468800067902
opcount : 0.602999973297
So the buffer read strategy seems to be the fastest for Windows/Python 2.6
Here is the code:
from __future__ import with_statement
import time
import mmap
import random
from collections import defaultdict
def mapcou...
Alternatives to gprof [closed]
...d by .. There are performance problems vWxYz taking 1/2, 1/4, 1/8, 1/16, 1/32 of the time, respectively. Sampling finds v easily. It is removed, leaving
xWzWxWYWxW.WxWYW
Now the program takes half as long to run, and now W takes half the time, and is found easily. It is removed, leaving
xzxYx.xY
Thi...
Is there any use for unique_ptr with array?
std::unique_ptr has support for arrays, for instance:
17 Answers
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How to overcome “datetime.datetime not JSON serializable”?
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32 Answers
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Removing empty lines in Notepad++
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