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Spring DAO vs Spring ORM vs Spring JDBC
...to the proper DataAccessException subclass.
As an example, suppose you're now using Hibernate, and your service layer catches HibernateException in order to react to it. If you change to JPA, your DAOs interfaces should not change, and the service layer will still compile with blocks that catches H...
What does ** (double star/asterisk) and * (star/asterisk) do for parameters?
...guaranteed to remember insertion order. "The order of elements in **kwargs now corresponds to the order in which keyword arguments were passed to the function." - docs.python.org/3/whatsnew/3.6.html In fact, all dicts in CPython 3.6 will remember insertion order as an implementation detail, this bec...
Saving interactive Matplotlib figures
...
pickle now works on MPL figures, so this can be done and appears to work reasonable well - almost like a Matlab ".fig" figure file. See my answer below (for now?) for an example of how to do it.
– Demis
...
When to use self over $this?
...I did get some more information that I found helpful further down, but for now I was just trying to figure out why I hit my class attributes with $this->attrib and the class constants with self::constant. This helped me understand that better
– MydKnight
Jul...
How to use classes from .jar files?
...
Not every jar file is executable.
Now, you need to import the classes, which are there under the jar, in your java file. For example,
import org.xml.sax.SAXException;
If you are working on an IDE, then you should refer its documentation. Or at least specif...
How do I check if a Sql server string is null or empty
...ffer_Text == '')
temp := null;
else
temp := listing.Offer_Text; // may now be null or non-null, but not ''
// b) ISNULL:
if (temp is null)
result := true;
else
result := false;
share
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impr...
How to set Bullet colors in UL/LI html lists via CSS without using any images or span tags [duplicat
Imagine a simple unsorted list with some <li> items. Now, I have defined the bullets to be square shaped via list-style:square; However, if I set the color of the <li> items with color: #F00; then everything becomes red!
...
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock'
...lin) and then set root password on phpMyAdmin . I forgot the password and now I am unable to login. When I try to change password through terminal I get:
...
Sorting an ArrayList of objects using a custom sorting order
...<Contact> contacts = new ArrayList<Contact>();
// Fill it.
// Now sort by address instead of name (default).
Collections.sort(contacts, new Comparator<Contact>() {
public int compare(Contact one, Contact other) {
return one.getAddress().compareTo(other.getAddress());
...
How can a web application send push notifications to iOS devices? [closed]
...ort push notifications.
UPDATE:
Mac OS X 10.9 & Safari 7 websites can now also send push notifications, but this still does not apply to iOS.
Read the Notification Programming Guide for Websites. Also check out WWDC 2013 Session 614.
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