Re: Parameter is null by default. No value is given. Code says it is not null.

[tcak via Digitalmars-d-learn]

On Thursday, 9 April 2015 at 12:06:49 UTC, Daniel Kozák wrote:

On Thu, 09 Apr 2015 11:45:30 +0000
tcak via Digitalmars-d-learn 
<digitalmars-d-learn@puremagic.com> wrote:


Can you post full example somewhere, this code works ok for me:

import std.stdio;
import std.datetime;

class Response
{
    public bool setCookie(
            string name,
            string value,
            long maxAgeInSeconds = long.min,
            string expiresOnGMTDate=null,
            string path=null,
            string domain=null,
            bool secure=false
    ) shared
    {

            // name cannot be empty
            if( (name is null) || (name.length <= 0) ) return 
false;

            writeln(
                    "Name: ", name,
                    "  Max Age: ", maxAgeInSeconds,
                    "  Expires null: ", (expiresOnGMTDate == 
null),
                    "  Path equals null: ", (path == null),
                    "  Domain null: ", (domain is null)
            );

            return true;
    }
}

void main()
{
    auto response = new shared Response();
    response.setCookie( "A", "B" );
    auto now = std.datetime.Clock.currTime().toSimpleString();
    //writeln("Now |", now, "|");
    response.setCookie( "Response Time", now );
}

I have listed full code down below. It is written in test.d file 
and I run it with "rdmd test.d". Its result is as below for me:

tolga@tolga-H97M-D3H:~/Desktop$ rdmd test.d
Name: A 1  Expires null: true  Path equals null: true  Domain 
null: true
Name: A 2  Expires null: true  Path equals null: true  Domain 
null: false
Name: A 3  Expires null: true  Path equals null: true  Domain 
null: false
Name: A 4  Expires null: true  Path equals null: true  Domain 
null: false
Name: A 5  Expires null: true  Path equals null: true  Domain 
null: false
~~~~~~~~~
Name: A 6  Expires null: true  Path equals null: false  Domain 
null: false
Name: A 7  Expires null: true  Path equals null: true  Domain 
null: false
Name: A 8  Expires null: true  Path equals null: true  Domain 
null: false
Name: A 9  Expires null: true  Path equals null: true  Domain 
null: false
~~~~~~~~~
Name: A10  Expires null: true  Path equals null: false  Domain 
null: false
Name: A11  Expires null: true  Path equals null: true  Domain 
null: false
Name: A12  Expires null: true  Path equals null: true  Domain 
null: false
Name: A13  Expires null: true  Path equals null: true  Domain 
null: false


[[code]]

import std.stdio;
import std.datetime;

public class HttpResponse{
        public void setCookie(
                string name,
                string value,
                long maxAgeInSeconds = long.min,
                string expiresOnGMTDate=null,
                string path=null,
                string domain=null,
                bool secure=false
        ) shared{
                writeln(
                        "Name: ", name,
                        "  Expires null: ", (expiresOnGMTDate == null),
                        "  Path equals null: ", (path == null),
                        "  Domain null: ", (domain is null)
                );
        }

        public void hellYeah(
                string name,
                string value,
                long maxAgeInSeconds = long.min,
                string expiresOnGMTDate=null,
                string path=null,
                string domain=null,
                bool secure=false
        ) shared{
                writeln(
                        "Name: ", name,
                        "  Expires null: ", (expiresOnGMTDate == null),
                        "  Path equals null: ", (path == null),
                        "  Domain null: ", (domain is null)
                );
        }

        public void hellYeah2(
                string name,
                string value,
                long maxAgeInSeconds = long.min,
                string expiresOnGMTDate=null,
                string path=null,
                string domain=null,
                bool secure=false
        ) shared{
                writeln(
                        "Name: ", name,
                        "  Expires null: ", (expiresOnGMTDate == null),
                        "  Path equals null: ", (path == null),
                        "  Domain null: ", (domain is null)
                );
        }
}

void main(){
        auto responseObject = new shared HttpResponse();

        responseObject.hellYeah( "A 1", "B1" );
        responseObject.hellYeah( "A 2", "B2" );
        responseObject.hellYeah( "A 3", "B3" );
        responseObject.hellYeah( "A 4", "B4" );
        responseObject.hellYeah( "A 5", "B5" );

        writeln("~~~~~~~~~");

        responseObject.setCookie( "A 6", "B6" );
        responseObject.setCookie( "A 7", "B7" );
        responseObject.setCookie( "A 8", "B8" );
        responseObject.setCookie( "A 9", "B9" );

        writeln("~~~~~~~~~");
        
        responseObject.hellYeah2( "A10", "B10" );
        responseObject.hellYeah2( "A11", "B11" );
        responseObject.hellYeah2( "A12", "B12" );
        responseObject.hellYeah2( "A13", "B13" );
}