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SQLite - UPSERT *not* INSERT or REPLACE
...
Assuming three columns in the table: ID, NAME, ROLE
BAD: This will insert or replace all columns with new values for ID=1:
INSERT OR REPLACE INTO Employee (id, name, role)
VALUES (1, 'John Foo', 'CEO');
BAD: This will insert or replace 2 of the columns... the NAME colum...
Passing Parameters JavaFX FXML
...om data to an FXML controller by retrieving the controller from the FXML loader instance and calling a method on the controller to initialize it with the required data values.
Something like the following code:
public Stage showCustomerDialog(Customer customer) {
FXMLLoader loader = new FXMLLoader...
jQuery UI accordion that keeps multiple sections open?
...'t use
this. Usually it can be written with a
few lines of jQuery instead, something
like this:
jQuery(document).ready(function(){
$('.accordion .head').click(function() {
$(this).next().toggle();
return false;
}).next().hide();
});
Or animated:
jQuery(document).ready(f...
@Basic(optional = false) vs @Column(nullable = false) in JPA
...Yorke (EclipseLink Architecture Committee Member, TopLink Core Technical Lead, JPA 2.0 Expert Group Member) wrote a good answer on this topic so instead of paraphrasing him, I'll quote his answer:
The difference between optional and
nullable is the scope at which they
are evaluated. The defi...
How to hide 'Back' button on navigation bar on iPhone?
I added a navigation control to switch between views in my app. But some of the views shouldn't have 'Back' (the previous title) button. Any ideas about how to hide the back button?
...
Determine device (iPhone, iPod Touch) with iOS
...
calvinf
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answered Jan 15 '09 at 19:54
Adam RosenfieldAdam Rosenfield...
Understanding “randomness”
I can't get my head around this, which is more random?
28 Answers
28
...
How to shorten my conditional statements
...in knowing how it works and/or have encountered it in other's code.
Instead of checking if the result of indexOf is >= 0, there is a nice little shortcut:
if ( ~[1, 2, 3, 4].indexOf(test.type) ) {
// Do something
}
Here is the fiddle: http://jsfiddle.net/HYJvK/
How does this work? If an...
Rails Model find where not equal
...l GroupUser itself e.g., in a scope, you can use arel_table[:user_id] instead of GroupUser.arel_table[:user_id]
Rails 4.0 syntax credit to @jbearden's answer
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A better similarity ranking algorithm for variable length strings
...of Catalysoft wrote an article about a very clever algorithm that compares adjacent character pairs that works really well for my purposes:
http://www.catalysoft.com/articles/StrikeAMatch.html
Simon has a Java version of the algorithm and below I wrote a PL/Ruby version of it (taken from the plain...