473,320 Members | 1,707 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,320 software developers and data experts.

template compile error

I would need some help in figuring out this compile error. Thanks in
advance for any help.

I have a template like this:
template <class T, class T1>
class Dummy {
public:
float buildList(T& tmpAreaPerCent, const T& allAreaPerCent, int no);

};

template<class T, class T1>
float Dummy<T, T1>::buildList(T& tmpAreaPerCent, const T&
allAreaPerCent, int no) {

vector<int> allItr;

allItr.push_back(0);

int size = tmpAreaPerCent.size() - 1;
allItr.push_back(size);

sort(allItr.begin(), allItr.end());

for (int i = 0; i + 1 < allItr.size() ; i++) {
int beginIndex = allItr[i];

if (i != 0) beginIndex += 1;

int endIndex = allItr[i+1];
// comment calling method here
}
return 0.0;
};

This is where I create the template:
Dummy< vector<float>, float > pmh2;
float areaStdDev = pmh2.buildList(tmpAreaPerCent, allAreaPerCent,
no);

Here is the error:
.../MatcherHelper.h: In member function 'float Dummy<T,
T1>::buildList(T&, const T&, int) [with T = std::vector<float,
std::allocator<float> >, T1 = float]':
.../Row1Matcher.cpp:41: instantiated from here
.../PatternMatcherHelper.h:36: warning: comparison between signed and
unsigned integer expressions
.../Row1Matcher.cpp:41: instantiated from here

Thank you

Feb 26 '06 #1
2 1803
On Sat, 25 Feb 2006 17:59:20 -0800, ken.carlino wrote:
I would need some help in figuring out this compile error. Thanks in
advance for any help.

I have a template like this:
template <class T, class T1>
class Dummy {
public:
float buildList(T& tmpAreaPerCent, const T& allAreaPerCent, int no);

};

template<class T, class T1>
float Dummy<T, T1>::buildList(T& tmpAreaPerCent, const T&
allAreaPerCent, int no) {

vector<int> allItr;

allItr.push_back(0);

int size = tmpAreaPerCent.size() - 1;
allItr.push_back(size);

sort(allItr.begin(), allItr.end());

for (int i = 0; i + 1 < allItr.size() ; i++) {
int beginIndex = allItr[i];

if (i != 0) beginIndex += 1;

int endIndex = allItr[i+1];
// comment calling method here
}
return 0.0;
};

This is where I create the template:
Dummy< vector<float>, float > pmh2;
float areaStdDev = pmh2.buildList(tmpAreaPerCent, allAreaPerCent,
no);

Here is the error:
../MatcherHelper.h: In member function 'float Dummy<T,
T1>::buildList(T&, const T&, int) [with T = std::vector<float,
std::allocator<float> >, T1 = float]':
../Row1Matcher.cpp:41: instantiated from here
../PatternMatcherHelper.h:36: warning: comparison between signed and
unsigned integer expressions
../Row1Matcher.cpp:41: instantiated from here

Thank you

It's a warning, not an error. Go to line 36 in PatternMatcherHelper.h
(as the warning says), and see which integers you're comparing. It may or
may not matter.

Feb 26 '06 #2
ke*********@gmail.com wrote:
I would need some help in figuring out this compile error. Thanks in
advance for any help.

I have a template like this:
template <class T, class T1>
class Dummy {
public:
float buildList(T& tmpAreaPerCent, const T& allAreaPerCent, int no);

};

template<class T, class T1>
float Dummy<T, T1>::buildList(T& tmpAreaPerCent, const T&
allAreaPerCent, int no) {

vector<int> allItr;

allItr.push_back(0);

int size = tmpAreaPerCent.size() - 1;
allItr.push_back(size);

sort(allItr.begin(), allItr.end());

for (int i = 0; i + 1 < allItr.size() ; i++) {

for (vector<int>::size_type i = 0; ...

// vector<int>::size_type is unsigned
int beginIndex = allItr[i];

if (i != 0) beginIndex += 1;

int endIndex = allItr[i+1];
// comment calling method here
}
return 0.0;
};

This is where I create the template:
Dummy< vector<float>, float > pmh2;
float areaStdDev = pmh2.buildList(tmpAreaPerCent, allAreaPerCent,
no);

Here is the error:
../MatcherHelper.h: In member function 'float Dummy<T,
T1>::buildList(T&, const T&, int) [with T = std::vector<float,
std::allocator<float> >, T1 = float]':
../Row1Matcher.cpp:41: instantiated from here
../PatternMatcherHelper.h:36: warning: comparison between signed and
unsigned integer expressions
Isn't the above warning obvious? Go to line 36 and find out about signed
and unsigned integer.
../Row1Matcher.cpp:41: instantiated from here

Thank you

Feb 26 '06 #3

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

6
by: Ben Ingram | last post by:
Hi all, I am writing a template matrix class in which the template parameters are the number of rows and number of columns. There are a number of reasons why this is an appropriate tradeoff for...
3
by: 胡岳偉(Yueh-Wei Hu) | last post by:
Hi all, I have 2 questions about template function as friends in template classes. I don't know why, and hope someone could help me. ...
0
by: Yueh-Wei Hu | last post by:
Victor Bazarov <v.Abazarov@comAcast.net> wrote in message news: ============================================================== > > Question 1: > >...
1
by: ranges22 | last post by:
****************************************************************** I am compiling a librarry which has a .h file containing th following:...
5
by: rich | last post by:
Hi there, I defined a class template (MyClass) and some member variables and functions, as following: template<class T1, class T2> class MyClass { ... struct m_variable
12
by: aaragon | last post by:
Hello all. I have a simple question that seems trivial but I can't make it to work. I have a class that takes as a template argument, another class. The idea is as follows: #include...
2
by: Nick | last post by:
I'm learning C++ and ran into a compile error using Visual C++ 2005 Express on the following example program (located at http://www.cplusplus.com/doc/tutorial/templates.html): // template...
5
by: Wayne Shu | last post by:
Hi, guys I am reading Vandevoorde and Josuttis 's "C++ Template The Complete Guide" these days. When I read the chapter 15: Traits and Policy classes. I copy the code in 15.2.2 that use to...
3
by: stdlib99 | last post by:
Hi, I have a simple question regarding templates and meta programming. I am going to try and work my way through the C++ Template Metaprogramming, a book by David Abrahams and Aleksey...
7
by: QiongZ | last post by:
Hi, I just recently started studying C++ and basically copied an example in the textbook into VS2008, but it doesn't compile. I tried to modify the code by eliminating all the templates then it...
0
by: DolphinDB | last post by:
Tired of spending countless mintues downsampling your data? Look no further! In this article, you’ll learn how to efficiently downsample 6.48 billion high-frequency records to 61 million...
0
by: ryjfgjl | last post by:
ExcelToDatabase: batch import excel into database automatically...
0
by: jfyes | last post by:
As a hardware engineer, after seeing that CEIWEI recently released a new tool for Modbus RTU Over TCP/UDP filtering and monitoring, I actively went to its official website to take a look. It turned...
0
by: ArrayDB | last post by:
The error message I've encountered is; ERROR:root:Error generating model response: exception: access violation writing 0x0000000000005140, which seems to be indicative of an access violation...
1
by: PapaRatzi | last post by:
Hello, I am teaching myself MS Access forms design and Visual Basic. I've created a table to capture a list of Top 30 singles and forms to capture new entries. The final step is a form (unbound)...
1
by: CloudSolutions | last post by:
Introduction: For many beginners and individual users, requiring a credit card and email registration may pose a barrier when starting to use cloud servers. However, some cloud server providers now...
1
by: Defcon1945 | last post by:
I'm trying to learn Python using Pycharm but import shutil doesn't work
0
by: Faith0G | last post by:
I am starting a new it consulting business and it's been a while since I setup a new website. Is wordpress still the best web based software for hosting a 5 page website? The webpages will be...
0
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 3 Apr 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome former...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.