Input solicited: List function support as member functions in CFML

G'day:
I'm concerned about how Adobe have implemented the list-oriented member functions in ColdFusion 11. And I was hopeing to capture some community input as to what other people think, before raising it with Adobe:
Survey: lists in CFML, and the naming of list member functions
It'd be cool if you could take the time to complete the survey.
Thanks.
Adam

ruerric wrote:
I created a custom class called Rooms with all the appropriate setters and getters.Arguably, getters and setters are seldom appropriate.
I iterated through a csv file and input all of the data into my custom object class and then put that object into a list by using list.add().
Now I want to access the class methods through the use of the list.. how can I do so?
How I declared my list:
List list = new ArrayList<Rooms>(); // List implemented as growable array
Rooms xxx = (Rooms).list.get(20);
Says illegal start of type error.. What are you actually trying to accomplish here? Is list a static field of Rooms?
Also, I want to sort the list by the room capacity. My Rooms class has a .setCap and .getCap function but how can I sort the list using that?
From what I know about list.. it has a sort method but not exactly the way I want to sort a custom made class object..List doesn't have a sort method. There's a method in java.util.Collections to sort a list. I think it's "sort". You can pass it a java.util.Comparator that you write, to sort by whatever criteria you like.
Question: will the capacity of a room ever change? In real life, if you build a hotel, and a room has a capacity of 3 persons, does the room ever change capacity? If the capacity never changes, then it's debatable whether you really need a setCap() method. It would be better to set the capacity once, in the constructor, and leave it.

Similar Messages

Where can I find a list of NI-DAQ functions supported over the RDA server?

Hello,
I am developing an application in Microsoft VisualC++ for PXI6071E MIO card remotely using RDA server.
What I found out is that not all the functions described in the "Traditional NI-DAQ Function Reference Help" shipped with NI-DAQ version 7.0 are supported over the RDA server (e.g. Init_DA_Boards, or AO_Configure).
Is there any document available where the functions supported by the RDA server are listed? It will help me a lot instead of manually executing all the needed functions and building this list by myself.
Thank you in advance,
Silvius
Silvius Iancu

Hello Sarah,
Thank you very much for the link.
Based on this article I included the easyio.h and easyio.lib from LabWindows/CVI into my VC++ project and I managed to perform the needed operations using Easy IO function calls.
As a result of my own tests, the Analog Input functions provided by nidaq are not supported by the RDA server, but the General Purpose Timer/Counter functions are well supported.
Hopefully the future versions of NI-DAQ will be fully supported by the RDA server.
Thank you for your help,
Silvius
Silvius Iancu

How to alternate data storage into 2 arrays with an analog square wave input? (seems that the retriggerable function is not supported by my PXI card)

Hi!
I'm trying to have an analog square wave input determine where data gathered from a second analog input channel is stored. I want data to be stored to one array during the high signal period of the square wave and data to be store to another array during the low signal period of the square wave. The square wave I'm using is of constant frequency (8.3 Hz). I believe I need to use an analog input wave as opposed to a onboard clock or other timing mechanism because my square wave is also being used to modify the input going into my experimental setup. Thus the data storage needs to be correlated to the timing of the data modification in the experiment. I tried to use the retriggerable property node function, but receive error 200452, which I think means that my PXI card (6115) can't support this retriggerable function. So I'm looking for other ways to accomplish alternating data storage in response to an incoming analog square wave. Any help would be GREATLY appreciated... Thanks! (I'm also quite new with LabView so toddler-type explanations would probably be most useful )
-Shari
(LabView version 8.6)
Attachments:
Pulsed_Acq_Switch_Simplified.vi ‏47 KB

Hello Shari,
I am looking at your situation and it seems very intriguing. after downloading your file I have a couple questions to ask if you don't mind answering.
Currently in your program you are only taking one sample of data at a time, this could lead to uneven sampling. Would you like to sample at a consistent rate (say 10 Kilosamples of data a second?) if so what type of card are you using?
Also, Do you want your data to be in a 2-D array of data?
Best Wishes,
Daniel

Continue to receive error 1604 and can't use the recover function - help! I have gone through all the steps listed in support and nothing has worked. I am using a usb port I tested with my printer cable and it's fine.

I wanted to update my software this morning and it has turned into a nightmare. I continue to receive the error 1604, which is related to a usb port. I followed all the steps listed in support and nothing has helped. I just plugged in my printer cable to the usb port and it works fine, yet I continue to receive this error and can't use my phone!

A printer does not require power, and does not transfer large amounts of data. So that is not a valid test. It's like saying "if I plug a nightlight into an outlet it works fine, so why do 2 hair dryers on at the same time trip a circuit breaker?"
Are you using a port directly on the computer, and not a hub? If it's not a laptop and it has ports on front and back are you using a back port, which can supply more power?
Have you EVER used this computer to hack or jailbreak ANY iPhone (not necessarily the one with the problem? Or used a program to downgrade the version of iOS on any phone?

SQL Functions Supported by RDBMS Adapter

Hi,
Where can I find the list of SQL Functions supported by RDBMS Adapter?
I am retrieving date from Oracle 9i using RDBMS Adapter 8.1 SP2.However when I use any SQL Function (like to_char, to_date) in select query the service creation fails with a parsing exception.
Please help me resolving this.I want a date to be selected as a string in a particular format.
Thanks,
Vishvjit

Sorry,just got the resolution in Known Limitations of the adapter Release Notes. Actually we have to create a service of arbitory sql for using SQL Functions in the query.

Explicit template member function call from return value of function

i couldn't see this in the list of C++ standards not implemented <http://developers.sun.com/tools/cc/documentation/ss9_docs/mr/READMEs/c++.html> but sun studio 9 doesn't seem to allow explicit calls to template member functions where the left-hand-side is the return value of a function. here's a test-case:
template <typename T> class Ptr {
public:
T* p_;
Ptr(T* p) : p_(p) { }
template <typename U> Ptr(const Ptr& u) : p_(u.p_) { }
template <typename U> Ptr cast() const { return Ptr(*this); }
class A {
class B : public A {
Ptr<A> test_cast_1(const Ptr& b) { return b.cast<A>(); }
Ptr<A> test_cast_2(const Ptr& b) { return Ptr(b).cast<A>(); }sun studio 9 CC complains with the following message:
"sunstudio9-template-explicit-call.cc", line 18: Error: Unexpected type name "A" encountered.
"sunstudio9-template-explicit-call.cc", line 18: Error: Operand expected instead of ")".
2 Error(s) detected.
(line 18 is test_cast_2)
is this a known bug?
cheers,
/lib

you omitted the required keyword template:
template <typename T> class Ptr {
public:
T* p_;
Ptr(T* p) : p_(p) { }
template <typename U> Ptr(const Ptr& u) : p_(u.p_) { }
template <typename U> Ptr cast() const { return Ptr(*this); }
class A {
class B : public A {
Ptr<A> test_cast_1(const Ptr& b) { return b.cast<A>(); }
Ptr<A> test_cast_2(const Ptr& b) { return Ptr(b).template cast<A>(); }

This code executes normally in VS2014, despite the fact that an inline member function is not defined in every TU in which it is odr-used.

Consider this code:
header.h:
#include <iostream>
class A{
int i;
public:
A() : i(101) {}
void print();
void g(A&);
cpp1:
#include "header.h"
inline void A::print() { std::cout << i << '\n'; }
int main()
A a;
a.print();
g(a);
cpp2:
#include "header.h"
void g(A& a) { a.print(); }
Note that the member function A::print is defined outside its class with the specifier inline. The code executes normally in VS2014, despite the fact that the member function is odr-used in cpp2, but it is not defined in this file.
I found the following quotes from the C++11 Standard:
9.3/3:
An inline member function (whether static or non-static) may also be defined outside of its class definition provided either its declaration in the class definition or its definition outside of the class definition declares the function as inline.
3.2/3:
An inline function shall be defined in every translation unit in which it is odr-used.
7.1.2/4:
An inline function shall be defined in every translation unit in which it is odr-used and shall have exactly the same definition in every case.
The two last quotes above don't speak exactly about a member function but I believe they should be applied in this case too, as the inline specifier is a hint for the compiler to expand the function inline at the point of call. If we assume the compiler
does this inline expansion, how does it know the definition of the member function, while compiling the cpp2 file?

On 12/31/2014 12:13 PM, Belloc wrote:
C++ is supported on many different systems, with tools provided by many different vendors. Microsoft's linker happens to be pretty smart about merging identical blocks of code. Other toolchains may use linkers that weren't designed with this in mind,
and that would choke on multiple definitions of the same symbol. The C++ standard is written so that it's actually implementable, on as many platforms as possible.
Frankly I don't understand your statement above. What would be the difficulty for any compiler*that is already compliant with 3.2/3 and 7.1.2/4*, to adapt its code, so that each call to an inline function in a TU, which doesn't carry the function
definition, is simply not inlined?
That's the easy part. The "there's identical function definition in every .obj file, and the linker is expected to merge them all together" is the hard part. Normally, if you define a regular (non-inline) function in more than one source
file, you get a linker error. Microsoft's linker has a special way to mark "defined more than once, just pick any copy" block of code (see __declspec(selectany) ). Other linkers may not.
Igor Tandetnik

Reference to Class Member Functions

Hello all.
I have a question about references to LV class member functions. I have a small example to demonstrate my problem.
My test class Base implements a reentrant public dynamic dispatch member function, doSomething.vi.
Another test class, Child, inherits Base and overrides the implementation of doSomething.vi.
Now say I have an array of Base objects (which could include any objects from classes that inherit Base). I want to run the doSomething methods for all the objects in the array in parallel.
In C++, I'd define a pointer to the virtual member function doSomething, and use it with each object in the array and the correct version of doSomething would be called.
In Labview, the only way I've found to do it is like this:
This is less than ideal, because it relies on every child class implementing doSomething, and relies on specific names for the inputs to the method.
Is there a better way to do this?
Thank you,
Zola

I still suspect you are over-working this code and not leting LVOOP do tis thing.
As I understand it you want to creae an active object but detemine its class at run time. The recent Architect summit touched on messaging for what they are calling a "worker Pool" pattern or what-not. YOu may want to search on the summit stuff. lacking that I'll share some images of where I did something similar ( I think). Note this is an older app and new stuff like the "Start Asyncronous call..." has been introduced making this even easier.
I want to create a new Active Object (thread running in the background) so I invoke a method to do so
It invokes the following that create some queues for talking to it and getting info back.
Time does not permit me doing a complete write-up but I have assembled the above images into a LVOOP Albumn found here.
When you click on one of those images you will get a large view as shown in this example.
Just below that image you will find a link to the original thread where I posted the image and talked about it.
I believe the best I can do for you at the moment is to urge you to browse my albumn and chase the links.
That agllery was assembled in an attmept to help you and other before you asked. I hope it is helpful.
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

Not able to get distict values even after defining MAP MEMBER FUNCTION

Hi,
I am trying to get distinct values from a query to a table type. Please see the code below
CREATE OR REPLACE TYPE T_COPY_EVNT_DTL
IS
OBJECT
 eventId VARCHAR2(100),
 eventDescription VARCHAR2(100),
 promoMonthDescription VARCHAR2(100),
 promoStartDate VARCHAR2(100),
 promoEndDate VARCHAR2(100),
 PROMOCOSTSTARTDATE VARCHAR2(100) ,
 MAP MEMBER FUNCTION sort_key
 RETURN VARCHAR2 );
CREATE OR REPLACE TYPE BODY T_COPY_EVNT_DTL
AS
MAP MEMBER FUNCTION sort_key
RETURN VARCHAR2
IS
BEGIN
RETURN eventId ;
END;
END;
CREATE OR REPLACE TYPE T_EVENT_TABLE
IS
TABLE OF T_COPY_EVNT_DTL;
 with event_data as (
select '1' event,'event1' event_desc,'monthdesc1' promo_month_desc ,'01/01/2001' promo_start_date ,'01/01/2002' promo_end_date,'01/02/2001' promo_cost_start_date from dual union all
select '1' event,'event1' event_desc ,'monthdesc1'promo_month_desc ,'01/01/2001' promo_start_date ,'01/01/2002' promo_end_date,'01/02/2001' promo_cost_start_date from dual union all
select '3' event,'desc3' event_desc ,'monthdesc3' promo_month_desc,'01/01/2001' promo_start_date ,'01/01/2002' promo_end_date,'01/02/2001' promo_cost_start_date from dual union all
select '2' event ,'desc2' event_desc ,'monthdesc2' promo_month_desc ,'01/01/2001' promo_start_date ,'01/01/2002' promo_end_date ,'01/02/2001' promo_cost_start_date from dual )
SELECT cast(collect(distinct t_copy_evnt_dtl(event,
 event_desc,
 promo_month_desc,
 promo_start_date,
 promo_end_date,
 promo_cost_start_date) ORDER BY
 event_desc,
 promo_month_desc,
 promo_start_date,
 promo_end_date,
 promo_cost_start_date) as t_event_table) from event_data;
result :
T_EVENT_TABLE('T_COPY_EVNT_DTL('2','desc2','monthdesc2','01/01/2001','01/01/2002','01/02/2001')',
 'T_COPY_EVNT_DTL('3','desc3','monthdesc3','01/01/2001','01/01/2002','01/02/2001')',
 'T_COPY_EVNT_DTL('1','event1','monthdesc1','01/01/2001','01/01/2002','01/02/2001')',
 'T_COPY_EVNT_DTL('1','event1','monthdesc1','01/01/2001','01/01/2002','01/02/2001')')Please help me to find out the reason why it is not working...

Remove the comma from T_COPY_EVNT_DTL TYPE.
ORA-22800 indicates invalid user-defined type.
 PROMOCOSTSTARTDATE VARCHAR2(100) ,
 MAP MEMBER FUNCTION sort_keyAnd it will be fine.
SQL> CREATE OR REPLACE TYPE T_COPY_EVNT_DTL
2 IS
3 OBJECT
4 (
5 eventId VARCHAR2(100),
6 eventDescription VARCHAR2(100),
7 promoMonthDescription VARCHAR2(100),
8 promoStartDate VARCHAR2(100),
9 promoEndDate VARCHAR2(100),
10 PROMOCOSTSTARTDATE VARCHAR2(100),
11 --,
12 MAP MEMBER FUNCTION sort_key
13 RETURN VARCHAR2 );
14 /
Type created
SQL>
SQL> CREATE OR REPLACE TYPE BODY T_COPY_EVNT_DTL
2 AS
3 MAP MEMBER FUNCTION sort_key
4 RETURN VARCHAR2
5 IS
6 BEGIN
7 RETURN eventId ;
8 END;
9 END;
10 /
Type body created
SQL>
SQL> CREATE OR REPLACE TYPE T_EVENT_TABLE
2 IS
3 TABLE OF T_COPY_EVNT_DTL;
4 /
Type created
SQL>
SQL> with event_data as (
2 select '1' event,'event1' event_desc,'monthdesc1' promo_month_desc ,'01/01/2001' promo_start_date ,'01/01/2002' promo_end_date,'01/02/2001' promo_cost_start_date from dual union all
3 select '1' event,'event1' event_desc ,'monthdesc1'promo_month_desc ,'01/01/2001' promo_start_date ,'01/01/2002' promo_end_date,'01/02/2001' promo_cost_start_date from dual union all
4 select '3' event,'desc3' event_desc ,'monthdesc3' promo_month_desc,'01/01/2001' promo_start_date ,'01/01/2002' promo_end_date,'01/02/2001' promo_cost_start_date from dual union all
5 select '2' event ,'desc2' event_desc ,'monthdesc2' promo_month_desc ,'01/01/2001' promo_start_date ,'01/01/2002' promo_end_date ,'01/02/2001' promo_cost_start_date from dual )
6 SELECT cast(collect(distinct t_copy_evnt_dtl(event,
7 event_desc,
8 promo_month_desc,
9 promo_start_date,
10 promo_end_date,
11 promo_cost_start_date) ORDER BY
12 event_desc,
13 promo_month_desc,
14 promo_start_date,
15 promo_end_date,
16 promo_cost_start_date) as t_event_table) from event_data;
CAST(COLLECT(DISTINCTT_COPY_EV
<Object>

How to find out what are the functions supported by string class

Hi,
Can any one let me know how to find what are all the functions supported by the string class in standard(STL) library on solaris.
Regards,
Vignesh

1. Any C++ textbook that covers the Standard Library will tell you about the standard string class. A good tutorial and reference for the entire Standard Library is "The C++ Standard Library" by Nicolai Josuttis, published by Addison Wesley.
2. WIth Sun C++, the command
man -s3C++ basic_string
provides documentation for the default libCstd version of the Standard Library.
3. You could look at the <string> header itself. I don't recommend that approach.

Not able to access the result set from one member function to another

Im new to jdbc
I have declared a connection object , a result set object and statement object in one member function and i am not able to access these in another member function. But both are in the same class
Kindly help
Thanks
Shasi

Kindly refrain from double-posting:
http://forum.java.sun.com/thread.jspa?threadID=700659&tstart=0
- Saish

Pass C++ Class Member Function as a callable function in AIR Native Extension

I'm writing an ANE and I'd like to know if anyone has been able to pass a C++ class member function pointer as a callable function from AIR? I have tried this so far with a little bit of C++11 trickery and it's crashing. I've also statically linked the libstdc++ into my library, according to the documentation, in order to ensure that these features I use work correctly. I have code like so:
FakeWorld* world = new FakeWorld();
*numFunctions = 1;
memberFunctions = (FRENamedFunction*) malloc(sizeof(FRENamedFunction) * (*numFunctions));
ANEMemberFunction mCreateFakeBody = std::tr1::bind(&FakeWorld::createFakeBody, world, std::tr1::placeholders::_1, std::tr1::placeholders::_2, std::tr1::placeholders::_3, std::tr1::placeholders::_4);
ANEFunction* createFakeBody = mCreateFakeBody.target<ANEFunction>();
memberFunctions[0].name = (const uint8_t*) "createFakeBody";
memberFunctions[0].functionData = NULL;
memberFunctions[0].function = createFakeBody;
FRESetContextNativeData(ctx, (void*)world);
I just realized I'm using C here for allocating the member functions array.. silly me, but I don't think this is the cause of my issue. I refuse to believe that Adobe has built to the Native Extensions portion of the runtime in such a way that I have to cram every single function I want to create (natively) into a global, C formatted namespace (Especially since the documentation says that C is only required for the extenion and context initializing function interfacing and the rest of the code can be done in C++ or objective-C). So please let me know if and how this is possible and I thank you so much in advance for your time!P.
P.S. Currently when I run this code, I can do the object initialization just fine. As soon as I invoke the "createFakeBody" method on the native side, the runtime dies and simply says:
Problem signature:
Problem Event Name: BEX
Application Name: adl.exe
Application Version: 3.1.0.4880
Application Timestamp: 4eb7612e
Fault Module Name: StackHash_0a9e
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 00000000
Exception Offset: 00000000
Exception Code: c0000005
Exception Data: 00000008
OS Version: 6.1.7601.2.1.0.256.48
Locale ID: 1033
Additional Information 1: 0a9e
Additional Information 2: 0a9e372d3b4ad19135b953a78882e789
Additional Information 3: 0a9e
Additional Information 4: 0a9e372d3b4ad19135b953a78882e789
Read our privacy statement online:
http://go.microsoft.com/fwlink/?linkid=104288&clcid=0x0409
If the online privacy statement is not available, please read our privacy statement offline:
C:\Windows\system32\en-US\erofflps.txt
Thanks again for your assitance.

It's been a little while since i've dealt with C++ and not up to speed on tr1 or C++0x, so forgive me if i'm not helping.
The the examples of std::tr1::bind that i'm seeing out there seem to be either dereferencing the bound 'this' pointer when creating the bound method, i.e. in your case *world instead of world, or using std::tr1::ref(*world), therefore i believe that bind expects the bound parameters to be passed by reference.
Given that the result of std::tr1::bind is callable (basing that on http://stackoverflow.com/questions/3678884/virtual-member-functions-and-stdtr1function-how -does-this-work) could you simplify to the following:
memberFunctions[0].name = (const uint8_t*) "createFakeBody";
memberFunctions[0].functionData = NULL;
memberFunctions[0].function = std::tr1::bind(&FakeWorld::createFakeBody, *world, std::tr1::placeholders::_1, std::tr1::placeholders::_2, std::tr1::placeholders::_3, std::tr1::placeholders::_4);
Or for an even simpler starting point, creating a test member function 'helloWorld' in FakeWorld that takes no arguments and using:
memberFunctions[0].name = (const uint8_t*) "helloWorld";
memberFunctions[0].functionData = NULL;
memberFunctions[0].function = std::tr1::bind(&FakeWorld::helloWorld, *world);
Hope this helps.

Why can I not use the channel name, which is obtained from the function of DAQmx Task, as the input of the channel name for the function of Get Channel Information of DAQ?

Why can I not use the channel name, which is obtained from the function of DAQmx Task, as the input of the channel name for the function of Get Channel Information of DAQ?

Not a lot of details here, but my guess is this isn't working for you because you are wiring in the task to the Active Channels Property and not the actual Channel Name. I have attatched a screenshot of what I believe you are trying to do. The Task has 2 channels in it, so I need to index off one of the channels and wire it into the active channels input of the Channel Property node. Then I can read information about that channel
Attachments:
channel_name.JPG ‏69 KB

Does LDS 1.1 Support use-defined functions?

Does LDS 1.1 Support use-defined functions? I'm working with the W3C use case
REL Q12 which fails with the function, but succeeds if I "inline" the function.

LD 1.1 does not support User Defined Functions. This feature was omitted for performance
reasons.
- Mike
"Mark Maxey" <[email protected]> wrote:
>
Does LDS 1.1 Support use-defined functions? I'm working with the W3C
use case
REL Q12 which fails with the function, but succeeds if I "inline" the
function.

Does the Timer() function support multithread?

Hello,
In my application, there would be more than 1000 conversations to be monitored. I am going to design a woker thread for each conversation to determine the timeout of the communication, so I must using the timer mechanism. Due to just can create (max )16 async timers, so I want to use Timer() in the worker thread. I'd like to know if the function support multithread and if it will not be disturbed in a thread?
David

Hi David,
The 'timer' used by the Timer() function is global and not thread specific. Note that Timer() returns the number of seconds elapsed since the FIRST call to the Timer() function. This is independent of the thread where the FIRST and current calls take place. So, the values returned are kind of a global 'time' since the first Timer() call in your program. I would recommend that you FIRST call Timer() in your main thread before running your other threads and then the other values returned in any thread are the 'seconds' since this call.

Input solicited: List function support as member functions in CFML

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