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Best practices for circular shift (rotate) operations in C++
...motion rules mean that rotl_template(u16 & 0x11UL, 7) would do a 32 or 64-bit rotate, not 16 (depending on the width of unsigned long). Even uint16_t & uint16_t is promoted to signed int by C++'s integer-promotion rules, except on platforms where int is no wider than uint16_t.
On x86, th...
Why in C++ do we use DWORD rather than unsigned int? [duplicate]
...
164
DWORD is not a C++ type, it's defined in <windows.h>.
The reason is that DWORD has a spe...
Where is SQL Server Management Studio 2012?
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Just download SQLEXPRWT_x64_ENU.exe from Microsoft Downloads - SQL Server® 2012 Express with SP1
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nginx: [emerg] could not build the server_names_hash, you should increase server_names_hash_bucket_s
...ong domain name. You can fix this by adding
server_names_hash_bucket_size 64;
at the top of your http block (probably located in /etc/nginx/nginx.conf). I quote from the nginx documentation what to do when this error appears: In this case, the directive value should be increased to the next power ...
How can I use optional parameters in a T-SQL stored procedure?
...LL IDENTITY(1, 1) CONSTRAINT PK_Person PRIMARY KEY,
FirstName NVARCHAR(64) NOT NULL,
LastName NVARCHAR(64) NOT NULL,
Title NVARCHAR(64) NULL
)
GO
INSERT INTO Person (FirstName, LastName, Title)
VALUES ('Dick', 'Ormsby', 'Mr'), ('Serena', 'Kroeger', 'Ms'),
('Marina', 'Losoya', 'Mrs'...
I need to securely store a username and password in Python, what are my options?
...om pbkdf2 import PBKDF2
from Crypto.Cipher import AES
import os
import base64
import pickle
### Settings ###
saltSeed = 'mkhgts465wef4fwtdd' # MAKE THIS YOUR OWN RANDOM STRING
PASSPHRASE_FILE = './secret.p'
SECRETSDB_FILE = './secrets'
PASSPHRASE_SIZE = 64 # 512-bit passphrase
KEY_SIZE = 32 # 25...
converting Java bitmap to byte array
...encode bitmap into byte[] and vice versa
public static String encodeTobase64(Bitmap image) {
Bitmap immagex = image;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
immagex.compress(Bitmap.CompressFormat.PNG, 90, baos);
byte[] b = baos.toByteArray();
String imageEncode...
Is there a simple way to remove multiple spaces in a string?
... ', ' ')
Tests run on a laptop with an i5 processor running Windows 7 (64-bit).
timeit.Timer(stmt = test, setup = setup).repeat(7, 1000)
test_string = 'The fox jumped over\n\t the log.' # trivial
Python 2.7.3, 32-bit, Windows
test | minum | maximum | average ...
print call stack in C or C++
...oost_stacktrace.cpp:29 (discriminator 2)
3# __libc_start_main in /lib/x86_64-linux-gnu/libc.so.6
4# _start in ./boost_stacktrace.out
0# boost::stacktrace::basic_stacktrace<std::allocator<boost::stacktrace::frame> >::basic_stacktrace() at /usr/include/boost/stacktrace/stacktrace.hpp:1...
Structure padding and packing
...ed memory access is slower on architectures that allow it (like x86 and amd64), and is explicitly prohibited on strict alignment architectures like SPARC.
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