Thread: [Cppcms-users] Set a null value on JSON without quotes

Brought to you by: artyom-beilis

cppcms-users

[Cppcms-users] Set a null value on JSON without quotes

From: Daniel R. <dan...@li...> - 2012-10-31 01:18:11

Hello there ! I've need to set a null value on JSON without quotes, I've tried the following:
my_object["name"] = NULL; my_object["name"] = "null";
On the first case I've got "my_object": 0  and then "my_object":"null"   
But I've need "my_object":null 
Any clue ?
Daniel

Re: [Cppcms-users] Set a null value on JSON without quotes

From: Artyom B. <art...@ya...> - 2012-10-31 07:09:45

my_object["name"]=cppcms::json::null();

http://cppcms.com/cppcms_ref/latest/structcppcms_1_1json_1_1null.html


 
Artyom Beilis
--------------
CppCMS - C++ Web Framework:   http://cppcms.com/
CppDB - C++ SQL Connectivity: http://cppcms.com/sql/cppdb/



>________________________________
> From: Daniel Rios <dan...@li...>
>To: cppcms <cpp...@li...> 
>Sent: Wednesday, October 31, 2012 3:18 AM
>Subject: [Cppcms-users] Set a null value on JSON without quotes
> 
>
> 
>Hello there ! I've need to set a null value on JSON without quotes, I've tried the following:
>
>
>my_object["name"] = NULL; 
>my_object["name"] = "null";
>
>
>On the first case I've got "my_object": 0  and then "my_object":"null"   
>
>
>But I've need "my_object":null 
>
>
>Any clue ?
>
>
>Daniel
>
>
>
>
>
>
>
>
>------------------------------------------------------------------------------
>Everyone hates slow websites. So do we.
>Make your web apps faster with AppDynamics
>Download AppDynamics Lite for free today:
>http://p.sf.net/sfu/appdyn_sfd2d_oct
>_______________________________________________
>Cppcms-users mailing list
>Cpp...@li...
>https://lists.sourceforge.net/lists/listinfo/cppcms-users
>
>
>

Re: [Cppcms-users] Set a null value on JSON without quotes

From: Lee E. <lee...@gm...> - 2012-10-31 07:29:27

Any chance that cppcms under C++11 will support the syntax:

my_object["name"]=nullptr;

On Wed, Oct 31, 2012 at 9:09 AM, Artyom Beilis <art...@ya...> wrote:

> my_object["name"]=cppcms::json::null();
>
> http://cppcms.com/cppcms_ref/latest/structcppcms_1_1json_1_1null.html
>
> Artyom Beilis
> --------------
> CppCMS - C++ Web Framework:   http://cppcms.com/
> CppDB - C++ SQL Connectivity: http://cppcms.com/sql/cppdb/
>
>   ------------------------------
> *From:* Daniel Rios <dan...@li...>
> *To:* cppcms <cpp...@li...>
> *Sent:* Wednesday, October 31, 2012 3:18 AM
> *Subject:* [Cppcms-users] Set a null value on JSON without quotes
>
>  Hello there ! I've need to set a null value on JSON without quotes, I've
> tried the following:
>
> my_object["name"] = NULL;
> my_object["name"] = "null";
>
> On the first case I've got "my_object": 0  and then "my_object":"null"
>
> But I've need "my_object":null
>
> Any clue ?
>
> Daniel
>
>
>
>
>
>
> ------------------------------------------------------------------------------
> Everyone hates slow websites. So do we.
> Make your web apps faster with AppDynamics
> Download AppDynamics Lite for free today:
> http://p.sf.net/sfu/appdyn_sfd2d_oct
> _______________________________________________
> Cppcms-users mailing list
> Cpp...@li...
> https://lists.sourceforge.net/lists/listinfo/cppcms-users
>
>
>
>
> ------------------------------------------------------------------------------
> Everyone hates slow websites. So do we.
> Make your web apps faster with AppDynamics
> Download AppDynamics Lite for free today:
> http://p.sf.net/sfu/appdyn_sfd2d_oct
> _______________________________________________
> Cppcms-users mailing list
> Cpp...@li...
> https://lists.sourceforge.net/lists/listinfo/cppcms-users
>
>


-- 
--
lee
Lee Elenbaas
lee...@gm...

Re: [Cppcms-users] Set a null value on JSON without quotes

From: Marcel H. <ke...@co...> - 2012-10-31 08:14:12

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Am 31.10.2012 08:29, schrieb Lee Elenbaas:
> Any chance that cppcms under C++11 will support the syntax:
>
> my_object["name"]=nullptr;
I don't see any arguments against this. Write a patch and commit it via
sourceforge. Artyom will respond you if he thinks it is worth to implement.
>
> On Wed, Oct 31, 2012 at 9:09 AM, Artyom Beilis <art...@ya...
<mailto:art...@ya...>> wrote:
>
> my_object["name"]=cppcms::json::null();
>
> http://cppcms.com/cppcms_ref/latest/structcppcms_1_1json_1_1null.html
>
> Artyom Beilis
> --------------
> CppCMS - C++ Web Framework: http://cppcms.com/
> CppDB - C++ SQL Connectivity: http://cppcms.com/sql/cppdb/
>
> -------------------------
> *From:* Daniel Rios <dan...@li... <mailto:dan...@li...>>
> *To:* cppcms <cpp...@li...
<mailto:cpp...@li...>>
> *Sent:* Wednesday, October 31, 2012 <tel:2012> 3:18 AM
> *Subject:* [Cppcms-users] Set a null value on JSON without quotes
>
> Hello there ! I've need to set a null value on JSON without quotes,
I've tried the following:
>
> my_object["name"] = NULL;
> my_object["name"] = "null";
>
> On the first case I've got "my_object": 0 and then "my_object":"null"
>
> But I've need "my_object":null
>
> Any clue ?
>
> Daniel
>
>
>
>
>
>
------------------------------------------------------------------------------
> Everyone hates slow websites. So do we.
> Make your web apps faster with AppDynamics
> Download AppDynamics Lite for free today:
> http://p.sf.net/sfu/appdyn_sfd2d_oct
> _______________________________________________
> Cppcms-users mailing list
> Cpp...@li...
<mailto:Cpp...@li...>
> https://lists.sourceforge.net/lists/listinfo/cppcms-users
>
>
>
>
------------------------------------------------------------------------------
> Everyone hates slow websites. So do we.
> Make your web apps faster with AppDynamics
> Download AppDynamics Lite for free today:
> http://p.sf.net/sfu/appdyn_sfd2d_oct
> _______________________________________________
> Cppcms-users mailing list
> Cpp...@li...
<mailto:Cpp...@li...>
> https://lists.sourceforge.net/lists/listinfo/cppcms-users
>
>
>
>
> --
> --
> lee
> Lee Elenbaas
> lee...@gm... <mailto:lee...@gm...>
>
>
>
>
------------------------------------------------------------------------------
> Everyone hates slow websites. So do we.
> Make your web apps faster with AppDynamics
> Download AppDynamics Lite for free today:
> http://p.sf.net/sfu/appdyn_sfd2d_oct
>
>
> _______________________________________________
> Cppcms-users mailing list
> Cpp...@li...
> https://lists.sourceforge.net/lists/listinfo/cppcms-users

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://www.enigmail.net/
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=4nhe
-----END PGP SIGNATURE-----

Re: [Cppcms-users] Set a null value on JSON without quotes

From: Artyom B. <art...@ya...> - 2012-11-01 08:37:02

To be honest, I'm not sure it is good idea.

I'll explain why:

In C++ JSON object has valuesemantics, unlike the reference semantics in JavaScript, so using
NULL pointer or pointer to cppcms::json::null would be alien.

That is why object cppcms::json::null exists, it is dummy object that represents null value
and it works perfectly fine. Using pointer as substitution may be misleading as users
may assume that they assign pointers to json object and not values themselves.


Artyom Beilis

--------------
CppCMS - C++ Web Framework:   http://cppcms.com/
CppDB - C++ SQL Connectivity: http://cppcms.com/sql/cppdb/



>________________________________
> From: Lee Elenbaas <lee...@gm...>
>To: Artyom Beilis <art...@ya...> 
>Sent: Thursday, November 1, 2012 12:53 AM
>Subject: Re: [Cppcms-users] Set a null value on JSON without quotes
> 
>
>Hi Artyom,
>
>attached is a tested and working solution for the nullptr assignment
>i have 2 issues with it:
>
>1. i am not sure that the support for the C++03 syntax of
>my_object["val"] = (cppcms::json::null*)NULL; gives anything at all - so i think that should be removed, but i whould like your input on this
>2. i did not understand the config.h mechanism yet - and i think the support for autoptr should be inserted only in the case of C++11 and not in other modes - so conditioning for this is also missing
>
>lee
>
>
>On Wed, Oct 31, 2012 at 11:55 AM, Lee Elenbaas <lee...@gm...> wrote:
>
>Since this message bounced from the mailing list (probably due to the attachment)
>>i thought i will send it directly to you
>>
>>
>>as far as agreement to the copy write - i already gave you my consent about the tmpl_cc tool - just extend it to this or anything else i will send over in the future unless i will explicitly tell you not to
>>
>>
>>
>>---------- Forwarded message ----------
>>From: Lee Elenbaas <lee...@gm...>
>>Date: Wed, Oct 31, 2012 at 11:51 AM
>>Subject: Re: [Cppcms-users] Set a null value on JSON without quotes
>>To: cpp...@li...
>>
>>
>>
>>i did not found how to bring it up through source forge
>>i did not had time to check and see if it works yet (i will probably get around to it tonight)
>>
>>
>>but attached is the updated file that should support the following syntax:
>>
>>
>>always:
>>my_object["name"]=(json::null*)NULL;
>>
>>
>>in C++11 also
>>my_object["name"]=nullptr;
>>
>>if anyone manage to check it before i do - please let me know
>>
>>
>>On Wed, Oct 31, 2012 at 10:14 AM, Marcel Hellwig <ke...@co...> wrote:
>>
>>
>>>-----BEGIN PGP SIGNED MESSAGE-----
>>>Hash: SHA1
>>>
>>>Am 31.10.2012 08:29, schrieb Lee Elenbaas:
>>>
>>>> Any chance that cppcms under C++11 will support the syntax:
>>>>
>>>> my_object["name"]=nullptr;
>>>
I don't see any arguments against this. Write a patch and commit it via sourceforge. Artyom will respond you if he thinks it is worth to implement.
>>>>
>>>> On Wed, Oct 31, 2012 at 9:09 AM, Artyom Beilis <art...@ya... <mailto:art...@ya...>> wrote:
>>>>
>>>> my_object["name"]=cppcms::json::null();
>>>>
>>>>
      http://cppcms.com/cppcms_ref/latest/structcppcms_1_1json_1_1null.html
>>>> 
>>>> Artyom Beilis
>>>> --------------
>>>> CppCMS - C++ Web Framework: http://cppcms.com/
>>>> CppDB - C++ SQL Connectivity: http://cppcms.com/sql/cppdb/
>>>>
>>>
> -------------------------
>>>> *From:* Daniel Rios <dan...@li... <mailto:dan...@li...>>
>>>> *To:* cppcms <cpp...@li... <mailto:cpp...@li...>>
>>>> *Sent:* Wednesday, October 31, 2012 <tel:2012> 3:18 AM
>>>> *Subject:* [Cppcms-users] Set a null value on JSON without
      quotes
>>>
>>>>
>>>> Hello there ! I've need to set a null value on JSON without
      quotes, I've tried the following:
>>>>
>>>> my_object["name"] = NULL; 
>>>> my_object["name"] = "null";
>>>>
>>>> On the first case I've got "my_object": 0 and then
      "my_object":"null" 
>>>>
>>>> But I've need "my_object":null 
>>>>
>>>> Any clue ?
>>>>
>>>> Daniel
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
------------------------------------------------------------------------------
>>>> Everyone hates slow websites. So do we.
>>>> Make your web apps faster with AppDynamics
>>>> Download AppDynamics Lite for free today:
>>>> http://p.sf.net/sfu/appdyn_sfd2d_oct
>>>> _______________________________________________
>>>> Cppcms-users mailing list
>>>
> Cpp...@li... <mailto:Cpp...@li...>
>>>
>>>> https://lists.sourceforge.net/lists/listinfo/cppcms-users
>>>>
>>>>
>>>>
>>>>
------------------------------------------------------------------------------
>>>> Everyone hates slow websites. So do we.
>>>> Make your web apps faster with AppDynamics
>>>> Download AppDynamics Lite for free today:
>>>> http://p.sf.net/sfu/appdyn_sfd2d_oct
>>>> _______________________________________________
>>>> Cppcms-users mailing list
>>>
> Cpp...@li... <mailto:Cpp...@li...>
>>>
>>>> https://lists.sourceforge.net/lists/listinfo/cppcms-users
>>>>
>>>>
>>>>
>>>>
>>>> -- 
>>>> --
>>>> lee
>>>> Lee Elenbaas
>>>
> lee...@gm... <mailto:lee...@gm...>
>>>
>>>>
>>>>
>>>>
>>>>
------------------------------------------------------------------------------
>>>> Everyone hates slow websites. So do we.
>>>> Make your web apps faster with AppDynamics
>>>> Download AppDynamics Lite for free today:
>>>> http://p.sf.net/sfu/appdyn_sfd2d_oct
>>>>
>>>>
>>>> _______________________________________________
>>>> Cppcms-users mailing list
>>>> Cpp...@li...
>>>> https://lists.sourceforge.net/lists/listinfo/cppcms-users
>>>
>>>-----BEGIN PGP SIGNATURE-----
>>>Version: GnuPG v1.4.12 (GNU/Linux)
>>>Comment: Using GnuPG with Mozilla - http://www.enigmail.net/
>>>
>>>iQIcBAEBAgAGBQJQkN3JAAoJEIROXYQnkAHpqZsP/3kmWyN5la134Ckc62Zc02F5
>>>LlOKQ5RHmtOcKBxRj78xUSukmGVzwnM3tVe/JnRbnQYo+SFf5n/zl74s3PfzBKp6
>>>CNSEltKObhrhCnRTc1kwCdvXzHi1SNfyXDhwRIkrnLC8PKcWa1DfcwV3VZdvVWRE
>>>0XTNDMIc3SbOjuQCWNbnsTsWoGV5o7U5ZeUv9fTqAWCL0w7FQIfn3uSt+d/AqvM7
>>>rVCIxbDs96sunEyEerH0jc1atHmxRWtCPtZdosISgZOKuea72710MrRZ3zpPzWsb
>>>9CCIzh0Yo+l+fRAcGKej0VYAuH+i5DC+OrbBCQryukTynp6JjvUnZxOYeSbAj5Ro
>>>n3uzY/oatB4br/RjKLZGN3TW6fxz0ZMvNujoRgV5+25mRXyd7Z+nfgpbRDpjVgVL
>>>5BQotc+fboPvtANYiF9K6YZjGr82w9yMc95pO2d8x6CEtd7bbLroGSSc3pjNO0rC
>>>Cb5D0oW8dM8ivgUz6jR42ud7nwd8OtXaIk+UkIoWswpe1t6P/sKzZyD0awmisqaN
>>>bRRZL70mXeAZBQz4bpCPN3br2WhdbbWOR5Fzf/5NhosB/wtQfaWLnRGmIj6e+HOj
>>>VxuHzuZVjPlBmVTzdxtKN6fJwTeT3CvOmM9naT/zhvlbBu0uTgFpikgBNVeUUf9I
>>>oBlR6SgfrgiC2BuFfgb/
>>>=4nhe
>>>-----END PGP SIGNATURE-----
>>>
>>>
>>>------------------------------------------------------------------------------
>>>Everyone hates slow websites. So do we.
>>>Make your web apps faster with AppDynamics
>>>Download AppDynamics Lite for free today:
>>>http://p.sf.net/sfu/appdyn_sfd2d_oct
>>>_______________________________________________
>>>Cppcms-users mailing list
>>>Cpp...@li...
>>>https://lists.sourceforge.net/lists/listinfo/cppcms-users
>>>
>>>
>>
>>
>>
>>-- 
>>--
>>lee
>>Lee Elenbaas
>>lee...@gm...
>>
>>
>>
>>
>>
>>-- 
>>--
>>lee
>>Lee Elenbaas
>>lee...@gm...
>>
>>
>
>
>-- 
>--
>lee
>Lee Elenbaas
>lee...@gm...
>
>
>
>