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Understanding PrimeFaces process/update and JSF f:ajax execute/render attributes
... behaves exactly the same except that it doesn't support a comma-separated string while the PrimeFaces one does (although I personally recommend to just stick to space-separated convention), nor the @parent keyword. Also, it may be useful to know that <p:commandXxx process> defaults to @form w...
Asp.net - Add blank item at top of dropdownlist
...
After your databind:
drpList.Items.Insert(0, new ListItem(String.Empty, String.Empty));
drpList.SelectedIndex = 0;
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LEN function not including trailing spaces in SQL Server
....aspx, which states LEN "returns the number of characters of the specified string expression, excluding trailing blanks". It is, however, an easy detail on to miss if you're not wary.
You need to instead use the DATALENGTH function - see http://msdn.microsoft.com/en-us/library/ms173486(SQL.90).asp...
Rails select helper - Default selected value, how?
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if params[:pid] is a string, which if it came from a form, it is, you'll probably need to use
params[:pid].to_i
for the correct item to be selected in the select list
...
What's the difference between including files with JSP include directive, JSP include action and usi
...-app. The included content becomes part of the compiled JSP and there's no extra cost at runtime.
<jsp:include> (and JSTL's <c:import>, which is similar and even more powerful) are best suited to dynamic content. Use these when you need to include content from another URL, local or remo...
Appending HTML string to the DOM
How to append this HTML string
10 Answers
10
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What does in XML mean?
...DATA stands for Character Data and it means that the data in between these strings includes data that could be interpreted as XML markup, but should not be.
The key differences between CDATA and comments are:
As Richard points out, CDATA is still part of the document, while a comment is not.
In C...
Set value to NULL in MySQL
...d'] == '')) {
$val = 'NULL';
} else {
$val = "'" . mysql_real_escape_string($_POST['nullfield']) . "'";
}
$sql = "INSERT INTO .... VALUES ($val)";
if you put 'NULL' into your query, then you're just inserting a 4-character string. Without the quotes, NULL is the actual null value.
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What's the hardest or most misunderstood aspect of LINQ? [closed]
...cal grasp of it:
static void Linq_Deferred_Execution_Demo()
{
List<String> items = new List<string> { "Bob", "Alice", "Trent" };
var results = from s in items select s;
Console.WriteLine("Before add:");
foreach (var result in results)
{
Console.WriteLine(re...
RSS Feeds in ASP.NET MVC
...e><%= ViewData.Model.First().DatePublished.Value.ToUniversalTime().ToString("r") %></lastBuildDate>
<language>en-us</language>
<% foreach (Post p in ViewData.Model) { %>
<item>
<title><%= Html.Encode(p.Title) %></title>
<link>...