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Indexer not working with << operator [message #997311]

Sat, 05 January 2013 10:26

Eclipse User

I'm working on Juno, with MinGW as the tool chain and Makefile project. I am also having this issue on a Linux box with Indigo. The code.jpg is a screen shot of my problem.

As you can see the endl is being picked up by the parser as an error. However everything compiles and executes without issues. I've tried the following:

Window->Preferences->Indexer.
Increase Cache Limits to 256 MB.
"Use active build configuration"
Rebuilding Index: Uncheck "Enable Indexer". Click Apply. Check "Enable Indexer". Click OK
Right Click Project -> Indexer -> Tried many options combinations.

includes.jpg is a screen shot of my includes. Should I add anything to my Includes?

Anything other than put a semi colon after the variable and have a cout << endl; as the next statement would be greatly appreciated.

Thanks in advance,

Andrew

Attachment: code.jpg
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Attachment: includes.jpg
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Re: Indexer not working with << operator [message #997524 is a reply to message #997311]

Mon, 07 January 2013 21:16

Eclipse User

Does anyone else have this problem? This is the code you can copy and paste into eclipse:

#include <string>
#include <boost/units/systems/si/time.hpp>
#include <boost/units/systems/si/io.hpp>

using namespace std;
using namespace boost::units;
using namespace boost::units::si;

int main(void)
{
	quantity<si::time, double> myseconds = 10 * seconds;

	//indexer does NOT like this endl
	cout << myseconds << endl;

	string mystring = "No 'error' here";
	cout << mystring << endl;

	return 0;
}

Please Help!

Thanks,

Andrew

Re: Indexer not working with << operator [message #997576 is a reply to message #997524]

Tue, 08 January 2013 07:41

Eclipse User

Where can I find the .hpp files you have included? I am still a beginner in C++. Can you tell me if mySeconds is converted to string automatically so that it can be used in cout statement?

Edit:

I think you cannot use mySeconds with cout. You have to pass a string to cout.

[Updated on: Tue, 08 January 2013 08:00] by Moderator

Re: Indexer not working with << operator [message #997876 is a reply to message #997576]

Tue, 08 January 2013 18:06

Eclipse User

Thx for the reply. You can download the boost API here: www dot boost dot org . It has many useful APIs that are not in stl. After you download and extract, just copy the boost directory into your include directory as it's a header only library. i.e. it has no binaries (for most of the APIs at least).

mySeconds is using boost's units template library. It overloads the << operator so you do not have to do any type conversions (which is an expensive operation). You can read about templates here: www dot cplusplus dot com/doc/tutorial/templates/ . This website is very good resource if you are new C++. if you have any issues installing the boost library let me know and I'll help you out. If you can confirm you have this issue also it will be great. I can file a bug report. What tool chain/compiler are are you using?

p.s. Sorry about the links. I'm getting an error with this forum saying that i can only post links to eclipse.org

[Updated on: Tue, 08 January 2013 18:08] by Moderator

Re: Indexer not working with << operator [message #998036 is a reply to message #997876]

Wed, 09 January 2013 03:43

Eclipse User

OK. I will reply you again after I download and install the boost API. I am using I am using Eclipse C/C++ IDE and MinGW Compiler tools.

Edit:

I tried to compile the code after succesfully installing boost library and got the same error you are getting i.e., "invalid overload of endl"

I think myseconds is not being converted to string.

[Updated on: Wed, 09 January 2013 04:35] by Moderator

Re: Indexer not working with << operator [message #998083 is a reply to message #997876]

Wed, 09 January 2013 05:43

Eclipse User

Hi!

This code compiles fine.

#include <string>
#include <boost/units/systems/si/time.hpp>
#include <boost/units/systems/si/io.hpp>

using namespace std;
using namespace boost::units;
using namespace boost::units::si;

int main(void)
{
	quantity<si::time, double> myseconds = 10 * seconds;

	//indexer does NOT like this endl
	cout << myseconds;
	cout << endl;

	string mystring = "No 'error' here";
	cout << mystring << endl;

	return 0;
}

Re: Indexer not working with << operator [message #998415 is a reply to message #998083]

Wed, 09 January 2013 18:44

Eclipse User

You were not able to compile the code i posted with "cout << myseconds << endl;"? Instead of compiling it from eclipse, can you try to run this from your terminal or command prompt:

g++ filename.cpp -g -Wall -fmessage-length=0 -o output.exe

The code i posted compiles on both linux and windows on my end.

thx again for the help

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