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AWS Difference between a snapshot and AMI
...on't recommend them for beginners. An instance-store AMI is a copy of the root instance-store volume plus some metadata, all saved in an S3 bucket in a special format
EBS boot. This is probably what you are using. An EBS boot AMI is an EBS snapshot of the EBS root volume plus some metadata like t...
Network tools that simulate slow network connection [closed]
...e a public internet service on coffee shop wifi: sudo tc qdisc add dev lo root netem delay 500ms
– Sam Stokes
May 12 '10 at 21:21
7
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How to do an INNER JOIN on multiple columns
...ave an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'INNER_JOIN airports to_port ON (to_port.code = flights.tairport) WHERE ' at line 7
– Kiril
Mar 2 '10 at 21:26
...
How to link C++ program with Boost using CMake
...ocal install instead of system install, you can do it by this:
set( BOOST_ROOT "/home/xy/boost_install/lib/" CACHE PATH "Boost library path" )
set( Boost_NO_SYSTEM_PATHS on CACHE BOOL "Do not search system for Boost" )
find_package(Boost REQUIRED regex date_time system filesystem thread graph)
inc...
Proper Repository Pattern Design in PHP?
...ally hard to replace the underlying technology. If you store everything in MySQL now and want to move to MongoDB, it's a lot harder to replace 100 ad-hoc calls than it is a handful of entities.
Q: I will have too many methods in my repository.
A: I haven't really seen any way around this other th...
How to import other Python files?
...ge and then go to your host file where you want to import just type
from root.parent.folder.file import variable, class, whatever
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How to force the browser to reload cached CSS/JS files?
...($file)
{
if(strpos($file, '/') !== 0 || !file_exists($_SERVER['DOCUMENT_ROOT'] . $file))
return $file;
$mtime = filemtime($_SERVER['DOCUMENT_ROOT'] . $file);
return preg_replace('{\\.([^./]+)$}', ".$mtime.\$1", $file);
}
Now, wherever you include your CSS, change it from this:
<lin...
VC MFC工具栏(CToolBar)控件 - C/C++ - 清泛网 - 专注C/C++及内核技术
...真彩位图，上面的方法显示是无法实现的，那这个功能是如何实现呢？
SetImageList函数可以做到，既然要显示真彩位图，那就不能使用上面的工具栏资源（256色），所以一切都得到用代码实现
首先向工程引入六张位图（用于工...
What is PostgreSQL explain telling me exactly?
MySQL's explain output is pretty straightforward. PostgreSQL's is a little more complicated. I haven't been able to find a good resource that explains it either.
...
PostgreSQL error: Fatal: role “username” does not exist
...TE USER username;
eg. CREATE USER demo;
Assign privilege to user
GRANT ROOT TO username;
And then enable login that user, so you can run e.g.: psql template1, from normal $ terminal:
ALTER ROLE username WITH LOGIN;
s...