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Copying data from one SQLite database to another
...d .read.
Dump the table my_table from old_db.sqlite
c:\sqlite>sqlite3.exe old_db.sqlite
sqlite> .output mytable_dump.sql
sqlite> .dump my_table
sqlite> .quit
Read the dump into the new_db.sqlite assuming the table there does not exist
c:\sqlite>sqlite3.exe new_db.sqlite
sqlite>...
搜狗百度入口之争升级 开放竞合成流量变现抓手 - 资讯 - 清泛网 - 专注C/C+...
...并赔偿百度50万元。在分析人士看来，输入法之争本质上是用户之争。互联网是个大江湖，有利益的地方就有纷争，尤其是入口之争最为惨烈。近日，原本相处和谐的两家公司百度和搜狗对簿公堂，因输入法入口的争夺互诉至法...
Reference — What does this symbol mean in PHP?
... |
-------------------------------------------
|Place Value | 128| 64| 32| 16| 8| 4| 2| 1|
-------------------------------------------
This representation of 1 Byte
1 + 2 + 4 + 8 + 16 + 32 + 64 + 128 = 255 (1 Byte)
A few examples for better understanding
The "AND" operator: &
$a ...
What is the advantage of GCC's __builtin_expect in if else statements?
...00 00 callq b <main+0xb>
7: R_X86_64_PC32 time-0x4
b: 48 85 c0 test %rax,%rax
e: 75 0a jne 1a <main+0x1a>
10: bf 00 00 00 00 mov $0x0,%edi
11: R_X86_64_32 ...
bat 写注册表 及权限提升 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...-
REM --> Check for permissions
>nul 2>&1 "%SYSTEMROOT%\system32\cacls.exe" "%SYSTEMROOT%\system32\config\system"
REM --> If error flag set, we do not have admin.
if '%errorlevel%' NEQ '0' (
echo Requesting administrative privileges...
goto UACPrompt
) else ( goto gotAdmin )
:UACP...
Why is XOR the default way to combine hashes?
...ndom 0s and 1s -- in particular it is the inverse of the golden ratio as a 32 bit fixed point fraction) with some addition and an xor. This breaks symmetry, and introduces some "noise" if the incoming hashed values are poor (ie, imagine every component hashes to 0 -- the above handles it well, gene...
What is the difference between String and string in C#?
...ring.
So technically, there is no difference. It's like int vs. System.Int32.
As far as guidelines, it's generally recommended to use string any time you're referring to an object.
e.g.
string place = "world";
Likewise, I think it's generally recommended to use String if you need to refer spe...
C++并发编程（中文版） - 文档下载 - 清泛网 - 专注C/C++及内核技术
...文版）作为对《C++ Concurrency in Action》的中文翻译。本书是基于C++11新标准的并发和多线程编程深度指南。从std::thr 作为对《C++ Concurrency in Action》的中文翻译。
本书是基于C++11新标准的并发和多线程编程深度指南。
从std::thread...
Python: What OS am I running on?
...consistent output. i.e. platform.system() returns "Windows" instead of "win32". sys.platform also contains "linux2" on old versions of Python while it contains just "linux" on newer ones. platform.system() has always returned just "Linux".
– erb
Jun 9 '17 at 10...
PyLint “Unable to import” error - how to set PYTHONPATH?
...'s { "python.pythonPath": "${workspaceFolder}\\.venv\\Scripts\\python.exe" "python.linting.pylintPath": "${workspaceFolder}\\.venv\\Scripts\\pylint.exe" } Just for completeness.
– Roy2511
May 7 '19 at 5:54
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