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When to use Comparable and Comparator
.../2627608 There is Version class that uses ComparableVersion. Version - provides with factory methods ComparableVersion supposed to be object (with no static methods) - provides an version that is able to be compare with another one. Responsibilities are separated.
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How to get thread id from a thread pool?
....currentThread():
private class MyTask implements Runnable {
public void run() {
long threadId = Thread.currentThread().getId();
logger.debug("Thread # " + threadId + " is doing this task");
}
}
sha...
PostgreSQL query to return results as a comma separated list
Let say you have a SELECT id from table query (the real case is a complex query) that does return you several results.
5 ...
What is the difference between Session.Abandon() and Session.Clear()
...e between destroying a session and removing its values? Can you please provide an example demonstrating this?
10 Answers
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How to delete duplicate rows in SQL Server?
How can I delete duplicate rows where no unique row id exists?
23 Answers
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Datepicker: How to popup datepicker when click on edittext
...he date, the date should show in edittext in dd/mm/yyyy format. PLease provide me sample code or good links.
28 Answers
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UPDATE and REPLACE part of a string
I've got a table with two columns, ID and Value . I want to change a part of some strings in the second column.
9 Answer...
jquery .html() vs .append()
... depends heavily on the situation. If you want to create a large number of identical elements, then the last thing you want to do is create a massive loop, creating a new jQuery object on every iteration. E.g. the quickest way to create 100 divs with jQuery:
jQuery(Array(101).join('<div></...
What is href=“#” and why is it used?
...location.
Hash:
A hash - # within a hyperlink specifies an html element id to which the window should be scrolled.
href="#some-id" would scroll to an element on the current page such as <div id="some-id">.
href="//site.com/#some-id" would go to site.com and scroll to the id on that page...
Reference alias (calculated in SELECT) in WHERE clause
...sion is extremely complex (or costly to calculate) you should probably consider a computed column (and perhaps persisted) instead, especially if a lot of queries refer to this same expression.
PS your fears seem unfounded. In this simple example at least, SQL Server is smart enough to only perform ...