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Efficient SQL test query or validation query that will work across all (or most) databases
...for idleness. For example, the JDBC pooling library c3p0 has a property called preferredTestQuery , which gets executed on the connection at configured intervals. Similarly, Apache Commons DBCP has validationQuery .
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What is the equivalent of the C# 'var' keyword in Java?
.... variables are still 100% statically typed. This will not compile:
var myString = "foo";
myString = 3;
var is also useful when the type is obvious from context. For example:
var currentUser = User.GetCurrent();
I can say that in any code that I am responsible for, currentUser has a User or der...
How do I find out what version of WordPress is running?
...
Look in wp-includes/version.php
/**
* The WordPress version string
*
* @global string $wp_version
*/
$wp_version = '2.8.4';
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Visual Studio loading symbols
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Debug -> Delete All Breakpoints ( http://darrinbishop.com/blog/2010/06/sharepoint-2010-hangs-after-visual-studio-2010-f5-debugging )
After that you can use them again, but do it once. It will remove some kind of "invalid" breakpoints too and...
python max function using 'key' and lambda expression
...ms based on a set of rules based on the type of the objects (for example a string is always greater than an integer).
To modify the object before comparison, or to compare based on a particular attribute/index, you've to use the key argument.
Example 1:
A simple example, suppose you have a list ...
How to Get Element By Class in JavaScript?
...to have any content inside the element you want to replace. You can have a string in there or you can have it empty. Either way the replacement text will suddenly appear there when the function is called.
– Taylor
Sep 28 '10 at 0:47
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Use of Initializers vs Constructors in Java
...lections. For example:
public class Deck {
private final static List<String> SUITS;
static {
List<String> list = new ArrayList<String>();
list.add("Clubs");
list.add("Spades");
list.add("Hearts");
list.add("Diamonds");
SUITS = Collections.unmodifiableL...
How to get only time from date-time C# [closed]
...ns for this:
DateTime dt = DateTime.Parse("6/22/2009 07:00:00 AM");
dt.ToString("HH:mm"); // 07:00 // 24 hour clock // hour is always 2 digits
dt.ToString("hh:mm tt"); // 07:00 AM // 12 hour clock // hour is always 2 digits
dt.ToString("H:mm"); // 7:00 // 24 hour clock
dt.ToString("h:mm tt"); // 7...
Accessing Google Spreadsheets with C# using Google Data API
...orksheetRel, null);
WorksheetQuery query = new WorksheetQuery(link.HRef.ToString());
WorksheetFeed feed = service.Query(query);
foreach (WorksheetEntry worksheet in feed.Entries)
{
Console.WriteLine(worksheet.Title.Text);
}
And get a cell based feed:
AtomLink cellFeedLink = worksheetentry.L...
Java Hashmap: How to get key from value?
If I have the value "foo" , and a HashMap<String> ftw for which ftw.containsValue("foo") returns true , how can I get the corresponding key? Do I have to loop through the hashmap? What is the best way to do that?
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