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Linux下部署企业级邮件服务器(postfix + dovecot + extmail) - 开源 & Gith...
...些修改，导致的一些麻烦
1、建立postfix用户，并且指定UID，GID为2525，组postdrop
groupadd -g 2525 postfix
useradd -g postfix -u 2525 -s /sbin/nologin -M postfix
groupadd -g 2526 postdrop
useradd -g postdrop -u 2526 -s /sbin/nologin -M postdrop
2、解压编译安装po...
Update statement with inner join on Oracle
...
That syntax isn't valid in Oracle. You can do this:
UPDATE table1 SET table1.value = (SELECT table2.CODE
FROM table2
WHERE table1.value = table2.DESC)
WHERE table1.UPDATETYPE=...
What do the f and t commands do in Vim?
...dioms like ct, or ct)to quickly replace one or last argument to a function call feel wonderful to use.
– nperson325681
Sep 20 '12 at 9:04
16
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Can I use my existing git repo with openshift?
...r openshift repo with your local bitbucket clone. You do that by issuing locally:
git merge openshift/master -s recursive -X ours
With this command you tell git to merge the master branch in the openshift git repo with your local git repo. You tell it to merge using the recursive merging strategy ...
Disabling browser caching for all browsers from ASP.NET
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@Evan, Application_BeginRequest will only be called for requests that are sent from IIS to ASP.NET. Many times, static files like CSS, JS, Images, Fonts, etc. are extensions that are considered static files from IIS and not sent to the ASP.NET Runtime. If IIS is set up ...
How can I access an internal class from an external assembly?
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@GiovanniCampo if you know statically what the type is: sure - just cast. If you don't know the type statically - it is unclear what this would even mean
– Marc Gravell♦
Sep 15 '15 at 18:54
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Android layout replacing a view with another view on run time
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You could replace any view at any time.
int optionId = someExpression ? R.layout.option1 : R.layout.option2;
View C = findViewById(R.id.C);
ViewGroup parent = (ViewGroup) C.getParent();
int index = parent.indexOfChild(C);
parent.removeView(C);
C = getLayoutInflater().inflat...
Remove duplicated rows using dplyr
... I'm sure there is a simple solution but what if I want to get rid of both duplicate rows? I often work with metadata associated with biological samples and if I have duplicate sample IDs, I often can't be sure sure which row has the correct data. Safest bet is to dump both to avoid erron...
Downcasting shared_ptr to shared_ptr?
...tic_cast in release builds. Well, such a thing is already available and is called shared_polymorphic_downcast.
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Troubleshooting “The use statement with non-compound name … has no effect”
...he first result on Google for this error I will state how I fixed it.
Basically if you have a framework, say like Yii2 you will be used to having to do declare classes like:
use Yii;
use yii\db\WhatEver;
class AwesomeNewClass extends WhatEver
{
}
You will get this error on Use Yii since this cl...