Anyone Know, why We use external javascript?

What are pros of using an external javascript file? I just can't figure it out, I see big websites using them all around several times instead of server-side includes. Is it just for caching?
If it's a matter of clean code and seperation of concerns, then you can still include it from the serverside into the html. For example I use SMARTY and I can just include the file {include file='javascript.js} inside <script></script> tages. If it's for performance I can't see anything other than an extra http request that makes the external file slower involved. I'm sure I must be missing something because all the big websites still do this.
Is it because of caching the file? my javascripts are dynamic and shouldn't be cached anyway.
could someone help me out to make the right decision to choose what to do with my javascript files.
ps:can a 1.5K user create a tag for external-javascript?

Answer Is:

In Your case, The most important is that the file is cached by the browser. The fewer bytes that need to be sent from the server the better. This is a big part of web performance.

Second to that, it provides modularity.
I'm not sure why your JavaScript is dynamic, but I suggest you rewrite it in a way that removes that need. That in itself might be an issue for you down the road.

My Question is, Why no SQL for NHibernate 3 Query?

Anyone have answer about my this question: Why is no SQL being generated when I run my Nhibernate 3 query?

    public IQueryable<Chapter> FindAllChapters()
    {
        using (ISession session = NHibernateHelper.OpenSession())
        {
            var chapters = session.QueryOver<Chapter>().List();

            return chapters.AsQueryable();
        }
    }

If I run the query below I can see that the SQL that gets created.

    public IQueryable<Chapter> FindAllChapters()
    {
        using (ISession session = NHibernateHelper.OpenSession())
        {
            var resultDTOs = session.CreateSQLQuery("SELECT Title FROM Chapter")
                    .AddScalar("Title", NHibernateUtil.String)
                    .List();

            // Convert resultDTOs into IQueryable<Chapter>
        }
    }

Answer Is:

Linq to NHibernate (like Linq to entities) uses delayed execution. You are returning IQueryable<Chapter> which means that you might add further filtering before using the data, so no query is executed.
If you called .ToList() or .List() (i forget which is in the API), then it would actually produce data and execute the query.
In other words, right now you have an unexecuted query.
For more info, google "delayed execution linq" for articles like this

How to Run PHP in Windows 7?

Anyone can help? I need to run HipHop PHP on a Windows based development environment. Im running Windows 7, I know the version located at facebook's repository is built for Linux, however I need to run it on Windows.
Some things to consider> 1- I don't want to install a Virtual Machine, I have VMWare, but it would be terrible to install it only for that 2- No CyWin either...

Answer Is:

There are two options for you:

• Try compiling it yourself. If it fails, fix the code so it will compile.
• Consider if there's another way to solve your problem (i.e., other tools than HipHop).

What have you done to solve your problem? Why did you conclude that HipHop was the right solution for your problem? What errors did you bump into when trying to install HipHop? These are such questions that you probably should ask yourself. They might help you to figure out how to solve your problem.

How to Use Flash CS5 on iPhone?

Hey, I am looking to develop basic client server data application to add value to a website.

The website is .net based and opening an api such as asmx web service, json or xml would be simple.
Can anyone tell me what are the limitations - technically, what is possible with flash and also what Apple consider to be good practice. 
Does anyone have any Actionscript code examples?

Answer is:

The iPhone does not support Flash.I don't think anything with Flash involved is considered "good practice" by Apple.

c#: crawler project here is the Answer:

Hi,
Could I get very easy to follow code examples on the following:

1. Use browser control to launch request to a target website.
2. Capture the response from the target website.
3. convert response into DOM object.
4. Iterate through DOM object and capture things like "FirstName" "LastName" etc if they are part of response.

thanks

Answer is:


Here is code that uses a WebRequest object to retrieve data and captures the response as a stream.

    public static Stream GetExternalData( string url, string postData, int timeout )
    {
        ServicePointManager.ServerCertificateValidationCallback += delegate( object sender,
                                                                                X509Certificate certificate,
                                                                                X509Chain chain,
                                                                                SslPolicyErrors sslPolicyErrors )
        {
            // if we trust the callee implicitly, return true...otherwise, perform validation logic
            return [bool];
        };

        WebRequest request = null;
        HttpWebResponse response = null;

        try
        {
            request = WebRequest.Create( url );
            request.Timeout = timeout; // force a quick timeout

            if( postData != null )
            {
                request.Method = "POST";
                request.ContentType = "application/x-www-form-urlencoded";
                request.ContentLength = postData.Length;

                using( StreamWriter requestStream = new StreamWriter( request.GetRequestStream(), System.Text.Encoding.ASCII ) )
                {
                    requestStream.Write( postData );
                    requestStream.Close();
                }
            }

            response = (HttpWebResponse)request.GetResponse();
        }
        catch( WebException ex )
        {
            Log.LogException( ex );
        }
        finally
        {
            request = null;
        }

        if( response == null || response.StatusCode != HttpStatusCode.OK )
        {
            if( response != null )
            {
                response.Close();
                response = null;
            }

            return null;
        }

        return response.GetResponseStream();
    }

For managing the response, I have a custom Xhtml parser that I use, but it is thousands of lines of code. There are several publicly available parsers (see Darin's comment).
EDIT: per the OP's question, headers can be added to the request to emulate a user agent. For example:
request = (HttpWebRequest)WebRequest.Create( url );
                request.Accept = "application/x-ms-application, image/jpeg, application/xaml+xml, image/gif, image/pjpeg, application/x-ms-xbap, application/x-shockwave-flash, */*";
                request.Timeout = timeout;
                request.Headers.Add( "Cookie", cookies );

                //
                // manifest as a standard user agent
                request.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US)";


Force local user to change password at next login with C#

I'm writing a function for a web app in ASP.NET where the client logs into the server machine, which is Windows authenticated against the local users on the server. The function I am writing resets the users password and emails them the new one. I do this like so:

String userPath = "WinNT://"  + Environment.MachineName + "/" + username.Text;
DirectoryEntry de = new DirectoryEntry(userPath);
de.Invoke("SetPassword", new object[] { password });

How can I also check the flag to force the user to change their password the next time they log in with the password emailed to them? I tried using pwdLastSet like so:

de.Properties["pwdLastSet"].Value = 0;

But this apparently only works with LDAP, not WinNT, and I am doing this locally.
Any experts know any better than me? I have even tried looking for a way to do this through the command line so that I can just create a Process, but I haven't been able to find a way to do it that way, either.


Answer is:

For WinNT, you must set the value to 1 rather than 0, and the property name is "PasswordExpired" rather than "pwdLastSet"; see http://msdn.microsoft.com/en-us/library/aa746542(VS.85).aspx
In other words, do this for WinNT:

de.Properties["PasswordExpired"].Value = 1;

(It is confusing, I know, but for LDAP you need to set the property "pwdLastSet" to 0. How's that for inconsistency!)

Get DisplayName Attribute without using LabelFor Helper in asp.net MVC

What is the best way to retrieve the display name attribute for an item in your model? I see a lot of people using the LabelFor helper for everything, but a label isn't appropriate if I just want to list the data out. Is there an easy way just get the Name Attribute if I just want to print it out in, say a paragraph?

Answer is"

<p>
    <%= Html.Encode(
        ModelMetadata.FromLambdaExpression<YourViewModel, string>(
            x => x.SomeProperty, ViewData).DisplayName
    ) %><p>

Obviously in order to avoid the spaghetti code it is always a good idea to write a helper:

public static class HtmlExtensions
{
    public static MvcHtmlString GetDisplayName<TModel, TProperty>(
        this HtmlHelper<TModel> htmlHelper, 
        Expression<Func<TModel, TProperty>> expression
    )
    {
        var metaData = ModelMetadata.FromLambdaExpression<TModel, TProperty>(expression, htmlHelper.ViewData);
        string value = metaData.DisplayName ?? (metaData.PropertyName ?? ExpressionHelper.GetExpressionText(expression));
        return MvcHtmlString.Create(value);
    }
}

And then:

<p>
    <%: Html.GetDisplayName(x => x.SomeProperty) %></p>