I have written a function as follows:

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

	// if headers are sent already, leave
	if( headersSent ) return false;

	// 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;
}



Here is the testing code:

responseObject.setCookie( "A", "B" );
auto now = std.datetime.Clock.currTime().toSimpleString();
//writeln("Now |", now, "|");
responseObject.setCookie( "Response Time", now );


Here is the results:

Name: A  Max Age: -9223372036854775808  Expires null: true  Path equals null: true  Domain null: true

Name: Response Time  Max Age: -9223372036854775808  Expires null: true  Path equals null: false  Domain null: false


I don't know what is happening though, somehow path and domain parameters in second use of function are not null even I haven't given any value to them.

If I uncomment the "writeln" line in test code, it turns normal. I am so much confused right now. What is happening here?

On Thursday, 9 April 2015 at 11:45:31 UTC, tcak wrote:
> I have written a function as follows:
>
> public bool setCookie(
> 	string name,
> 	string value,
> 	long maxAgeInSeconds = long.min,
> 	string expiresOnGMTDate=null,
> 	string path=null,
> 	string domain=null,
> 	bool secure=false
> ) shared{
>
> 	// if headers are sent already, leave
> 	if( headersSent ) return false;
>
> 	// 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;
> }
>
>
>
> Here is the testing code:
>
> responseObject.setCookie( "A", "B" );
> auto now = std.datetime.Clock.currTime().toSimpleString();
> //writeln("Now |", now, "|");
> responseObject.setCookie( "Response Time", now );
>
>
> Here is the results:
>
> Name: A  Max Age: -9223372036854775808  Expires null: true  Path equals null: true  Domain null: true
>
> Name: Response Time  Max Age: -9223372036854775808  Expires null: true  Path equals null: false  Domain null: false
>
>
> I don't know what is happening though, somehow path and domain parameters in second use of function are not null even I haven't given any value to them.
>
> If I uncomment the "writeln" line in test code, it turns normal. I am so much confused right now. What is happening here?

Well, I have tried same code without objects in a test code, and it is null now as expected. Completely same code though.

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

> I have written a function as follows:
> 
> public bool setCookie(
> 	string name,
> 	string value,
> 	long maxAgeInSeconds = long.min,
> 	string expiresOnGMTDate=null,
> 	string path=null,
> 	string domain=null,
> 	bool secure=false
> ) shared{
> 
> 	// if headers are sent already, leave
> 	if( headersSent ) return false;
> 
> 	// 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;
> }
> 
> 
> 
> Here is the testing code:
> 
> responseObject.setCookie( "A", "B" );
> auto now = std.datetime.Clock.currTime().toSimpleString();
> //writeln("Now |", now, "|");
> responseObject.setCookie( "Response Time", now );
> 
> 
> Here is the results:
> 
> Name: A  Max Age: -9223372036854775808  Expires null: true  Path equals null: true  Domain null: true
> 
> Name: Response Time  Max Age: -9223372036854775808  Expires null: true  Path equals null: false  Domain null: false
> 
> 
> I don't know what is happening though, somehow path and domain parameters in second use of function are not null even I haven't given any value to them.
> 
> If I uncomment the "writeln" line in test code, it turns normal. I am so much confused right now. What is happening here?

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 );
}

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" );
}

Don't use string == null, it is true for empty strings since null and an empty string are almost interchangable.

You can try if(string is null) - is instead of ==. Though usually in D, I just if(string.length == 0) and treat empty and null the same way.

On Thursday, 9 April 2015 at 13:32:38 UTC, Adam D. Ruppe wrote:
> Don't use string == null, it is true for empty strings since null and an empty string are almost interchangable.
>
> You can try if(string is null) - is instead of ==. Though usually in D, I just if(string.length == 0) and treat empty and null the same way.

I replaced all == with "is" for path and domain. Here are results:

Name: A 1  Expires null: true  Path equals null: true  Domain null: true
Name: A 2  Expires null: true  Path equals null: false  Domain null: false
Name: A 3  Expires null: true  Path equals null: false  Domain null: false
Name: A 4  Expires null: true  Path equals null: false  Domain null: false
Name: A 5  Expires null: true  Path equals null: false  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: false  Domain null: false
Name: A 8  Expires null: true  Path equals null: false  Domain null: false
Name: A 9  Expires null: true  Path equals null: false  Domain null: false
~~~~~~~~~
Name: A10  Expires null: true  Path equals null: false  Domain null: false
Name: A11  Expires null: true  Path equals null: false  Domain null: false
Name: A12  Expires null: true  Path equals null: false  Domain null: false
Name: A13  Expires null: true  Path equals null: false  Domain null: false


Could you try the code yourself as well? Because something is clearly wrong here. I even have removed "shared" from everywhere, results are still as above. There is no way "Expires" becomes null, and "Path" and "Domain" become false.

By the way, I am using "DMD64 D Compiler v2.067.0" on Ubuntu 14.04.

On Thursday, 9 April 2015 at 14:16:00 UTC, tcak wrote:
> By the way, I am using "DMD64 D Compiler v2.067.0" on Ubuntu 14.04.

I have Archlinux DMD64 D Compiler v2.067.0 and it works OK for me.

On Thursday, 9 April 2015 at 14:25:56 UTC, Daniel Kozak wrote:
> On Thursday, 9 April 2015 at 14:16:00 UTC, tcak wrote:
>> By the way, I am using "DMD64 D Compiler v2.067.0" on Ubuntu 14.04.
>
> I have Archlinux DMD64 D Compiler v2.067.0 and it works OK for me.

WOW

rdmd app.d(without params):
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: true
Name: A 3  Expires null: true  Path equals null: true  Domain null: true
Name: A 4  Expires null: true  Path equals null: true  Domain null: true
Name: A 5  Expires null: true  Path equals null: true  Domain null: true
~~~~~~~~~
Name: A 6  Expires null: true  Path equals null: true  Domain null: true
Name: A 7  Expires null: true  Path equals null: true  Domain null: true
Name: A 8  Expires null: true  Path equals null: true  Domain null: true
Name: A 9  Expires null: true  Path equals null: true  Domain null: true
~~~~~~~~~
Name: A10  Expires null: true  Path equals null: true  Domain null: true
Name: A11  Expires null: true  Path equals null: true  Domain null: true
Name: A12  Expires null: true  Path equals null: true  Domain null: true
Name: A13  Expires null: true  Path equals null: true  Domain null: true



dmd -O:
Name: A 1  Expires null: true  Path equals null: false  Domain null: false
Name: A 2  Expires null: true  Path equals null: false  Domain null: false
Name: A 3  Expires null: true  Path equals null: false  Domain null: false
Name: A 4  Expires null: true  Path equals null: false  Domain null: false
Name: A 5  Expires null: true  Path equals null: false  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: false  Domain null: false
Name: A 8  Expires null: true  Path equals null: false  Domain null: false
Name: A 9  Expires null: true  Path equals null: false  Domain null: false
~~~~~~~~~
Name: A10  Expires null: true  Path equals null: false  Domain null: false
Name: A11  Expires null: true  Path equals null: false  Domain null: false
Name: A12  Expires null: true  Path equals null: false  Domain null: false
Name: A13  Expires null: true  Path equals null: false  Domain null: false

dmd -release:
Name: A 1  Expires null: true  Path equals null: true  Domain null: true
Name: A 2  Expires null: true  Path equals null: false  Domain null: false
Name: A 3  Expires null: true  Path equals null: false  Domain null: false
Name: A 4  Expires null: true  Path equals null: false  Domain null: false
Name: A 5  Expires null: true  Path equals null: false  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: false  Domain null: false
Name: A 8  Expires null: true  Path equals null: false  Domain null: false
Name: A 9  Expires null: true  Path equals null: false  Domain null: false
~~~~~~~~~
Name: A10  Expires null: true  Path equals null: false  Domain null: false
Name: A11  Expires null: true  Path equals null: false  Domain null: false
Name: A12  Expires null: true  Path equals null: false  Domain null: false
Name: A13  Expires null: true  Path equals null: false  Domain null: false

with ldc everything is ok

On Thursday, 9 April 2015 at 14:30:07 UTC, Daniel Kozak wrote:
> On Thursday, 9 April 2015 at 14:25:56 UTC, Daniel Kozak wrote:
>> On Thursday, 9 April 2015 at 14:16:00 UTC, tcak wrote:
>>> By the way, I am using "DMD64 D Compiler v2.067.0" on Ubuntu 14.04.
>>
>> I have Archlinux DMD64 D Compiler v2.067.0 and it works OK for me.
>
> WOW
>
> rdmd app.d(without params):
Ok rdmd and dub works because they are use ldc, but do not me ask how. I always think that dub and rdmd should use dmd compiler until I tell them otherwise