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How to use Session attributes in Spring-mvc
...lns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
...
When to use “ON UPDATE CASCADE”
...0 digit UPC bar code and because of expansion, you need to change it to a 13-digit UPC bar code. In that case, ON UPDATE CASCADE would allow you to change the primary key value and any tables that have foreign key references to the value will be changed accordingly.
In reference to #4, if you chan...
Coalesce function for PHP?
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There is a new operator in php 5.3 which does this: ?:
// A
echo 'A' ?: 'B';
// B
echo '' ?: 'B';
// B
echo false ?: 'B';
// B
echo null ?: 'B';
Source: http://www.php.net/ChangeLog-5.php#5.3.0
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Callback functions in Java
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edited Dec 17 '13 at 12:59
answered Jan 14 '09 at 16:48
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How to check if any flags of a flag combination are set?
...7
Svish
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answered Aug 27 '09 at 9:48
yeyeyermany...
How do I associate a Vagrant project directory with an existing VirtualBox VM?
...s if a single VM exists:
{
"active":{
"default":"02f8b71c-75c6-4f33-a161-0f46a0665ab6"
}
}
default is the name of the default virtual machine (if you're not using multi-VM setups).
If your VM has somehow become disassociated, what you can do is do VBoxManage list vms which will list...
PostgreSQL database default location on Linux
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134
The "directory where postgresql will keep all databases" (and configuration) is called "data di...
Where is the “Create Unit Tests” selection?
...re was cut from VS.
http://blogs.msdn.com/b/visualstudioalm/archive/2012/03/08/what-s-new-in-visual-studio-11-beta-unit-testing.aspx
Generate Unit Test Wizard – In VS2010 you could right click on a
method in your code and we would generate a unit test into your test
project. This wizard w...
Test if a variable is a list or tuple
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13 Answers
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How can I remove the first line of a text file using bash/sed script?
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1073
Try tail:
tail -n +2 "$FILE"
-n x: Just print the last x lines. tail -n 5 would give you the ...