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MySQL Insert into multiple tables? (Database normalization?)
...ll in MySQL, and the
LAST_INSERT_ID() in the second
statement will automatically be the
value of the autoincrement-column
that was inserted in the first
statement.
Unfortunately, when the second statement itself inserts rows in a table with an auto-increment column, the LAST_INSERT_ID() will be upd...
How to analyze a java thread dump?
...refore, the guardian flag is enough to protect this piece of code. This is called a flat monitor. However, if another thread wants to access some code that is locked, a genuine contention has occurred. The JVM must now create (or inflate) the monitor object to hold the second thread and arrange for ...
Send data from activity to fragment in Android
...
Hmm I get a NullPointerException when calling getArguments().getString(key)
– Nima G
Aug 22 '13 at 6:16
9
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When and why I should use session_regenerate_id()?
...
And what appends if the hacker do the 20th call ? Session ID is changed and he is the only one to own the session ;))
– fred727
Oct 6 '15 at 10:59
...
How do servlets work? Instantiation, sessions, shared variables and multithreading
...in production). When a client (e.g. user with a web browser, or programmatically using URLConnection) sends an HTTP request, the servlet container creates new HttpServletRequest and HttpServletResponse objects and passes them through any defined Filter in the chain and, eventually, the Servlet insta...
Do AJAX requests retain PHP Session info?
...ests back to the same server do retain the same session info (assuming the called scripts issue a session_start() as per any other PHP script wanting access to session information).
share
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improve ...
Want to find records with no associated records in Rails
...s).where( :friends => { :person_id => nil } )
For the hmt it's basically the same thing, you rely on the fact that a person with no friends will also have no contacts:
Person.includes(:contacts).where( :contacts => { :person_id => nil } )
Update
Got a question about has_one in the ...
Naming of ID columns in database tables
...me name - by using the table name prefix you can have a primary key column called table1ID and a foreign key column in another table called table1ID - and you KNOW that they are the same thing. I was taught this 20 years ago and its a practice that doesn't let you down.
– amel...
what is reverse() in Django
...;!-- django <= 1.4 -->
<a href="{% url url_name %}">link which calls some_view</a>
<!-- django >= 1.5 or with {% load url from future %} in your template -->
<a href="{% url 'url_name' %}">link which calls some_view</a>
This will be rendered as:
<a href=...
How can I run a PHP script in the background after a form is submitted?
...er the path to the script are set as $_SERVER['argv'] variables that I can call within my script.
The email script then outputs to my log file using the >> and will output something like this:
[2011-01-07 11:01:26] Alert Notifications Sent for http://alerts.illinoisstate.edu/2049 (SCRIPT: 3...