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What does java:comp/env/ do?
...ione.zcu.cz/java/docs/jndi-1.2/tutorial/beyond/misc/policy.html
At the root context of the namespace
is a binding with the name "comp",
which is bound to a subtree reserved
for component-related bindings. The
name "comp" is short for component.
There are no other bindings at the
root...
Have nginx access_log and error_log log to STDOUT and STDERR of master process
...side a docker you may get permission denied if your process doesn't run as root in the container. There's a fix coming for this in the next version.
– Dobes Vandermeer
Oct 23 '15 at 19:37
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Modify table: How to change 'Allow Nulls' attribute from not null to allow null
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For MySQL, MariaDB
ALTER TABLE [table name] MODIFY COLUMN [column name] [data type] NULL
Use MODIFY COLUMN instead of ALTER COLUMN.
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What is the difference between “expose” and “publish” in Docker?
...expose bash
Inside the container, I launch a few instances of mini-httpd:
root@fb8f7dd1322d:/# mini_httpd -p 80
root@fb8f7dd1322d:/# mini_httpd -p 8080
root@fb8f7dd1322d:/# mini_httpd -p 8090
I am then able to use curl from the host or other containers to fetch the home page of mini-httpd.
Furthe...
Apple Pay入华遇阻 只因BAT太受欢迎？ - 资讯 - 清泛网 - 专注C/C++及内核技术
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BAT的解决之道：得民心者得天下
而移动支付玩家又是如何做的呢？很显然BAT三家都意识到了这一问题，在解决方案上却各有千秋。
支付宝：补贴和导流依旧是拿手戏
先从支付宝来讲，得益于在电商时代积累的庞大用户体系...
TypeError: $.ajax(…) is not a function?
I'm trying to create a simple AJAX request which returns some data from a MySQL database. Here's my function below:
13 Answ...
How do you turn off version control in android studio?
... Android Studio 1.2.x
FILE -> SETTINGS -> VERSION CONTROL
Here the root is shown, Press (-) button to delete.
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Finding duplicate rows in SQL Server
... I found this answer that worked just great: Get list of duplicate rows in MySql
SELECT n1.*
FROM myTable n1
INNER JOIN myTable n2
ON n2.repeatedCol = n1.repeatedCol
WHERE n1.id <> n2.id
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How to format all Java files in an Eclipse project at one time?
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Right click on the project root and select Source -> Format. This should work for at least version 3.8.1. and above.
If the above does not work, you're probably using an older Eclipse-version. In such case you can select your Source Folders by clic...
How can I confirm a database is Oracle & what version it is using SQL?
...om v$version;
For SQL server use:
Select @@VERSION as Version
and for MySQL use:
Show variables LIKE "%version%";
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