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help with boost


Hi,

Having problem with boost and stuck.
I have the following:

std::map <std::string, boost::anybinar yHeader;

and somewere else I write:
---------------
binaryHeader.in sert(make_pair( "job", 0));
binaryHeader.in sert(make_pair( "line", 0));
binaryHeader.in sert(make_pair( "reel", 0));
binaryHeader.in sert(make_pair( "Ensemble", 0));
---------------

further down in another function the following does not work:

---------------
for( map<std::string , boost::any>::it erator iter =
binaryHeader.be gin(); iter != binaryHeader.en d(); iter++)
cout << any_cast<string >((*iter).first ) << " is " <<
boost::any_cast <short>((*iter) .second) << endl;
---------------
whereis this works perfectly(repla cing <shortwith <int>):
---------------
for( map<std::string , boost::any>::it erator iter =
binaryHeader.be gin(); iter != binaryHeader.en d(); iter++) {
cout << any_cast<string >((*iter).first ) << " is " <<
boost::any_cast <int>((*iter).s econd) << endl;
----------------


What is wrong ? Isn't "boost::any " supposed to take 'any' type ?

Thanks in advance

Kamran


Jul 28 '06 #1
7 1659
Kamran wrote:
Hi,

Having problem with boost and stuck.
[..]
Did you know that Boost has its own online forum? Just checking...
Jul 28 '06 #2
Kamran wrote:
Having problem with boost and stuck.
I have the following:

std::map <std::string, boost::anybinar yHeader;

and somewere else I write:
---------------
binaryHeader.in sert(make_pair( "job", 0));
binaryHeader.in sert(make_pair( "line", 0));
binaryHeader.in sert(make_pair( "reel", 0));
binaryHeader.in sert(make_pair( "Ensemble", 0));
---------------
further down in another function the following does not work:
---------------
for( map<std::string , boost::any>::it erator iter =
binaryHeader.be gin(); iter != binaryHeader.en d(); iter++)
cout << any_cast<string >((*iter).first ) << " is " <<
boost::any_cast <short>((*iter) .second) << endl;
---------------
whereis this works perfectly(repla cing <shortwith <int>):
---------------
for( map<std::string , boost::any>::it erator iter =
binaryHeader.be gin(); iter != binaryHeader.en d(); iter++) {
cout << any_cast<string >((*iter).first ) << " is " <<
boost::any_cast <int>((*iter).s econd) << endl;
----------------
What is wrong ? Isn't "boost::any " supposed to take 'any' type ?
For help with portions of Boost that are not part of TR1, you should
ask on the Boost User list. See this FAQ for what is on-topic here:

http://www.parashift.com/c++-faq-lit...t.html#faq-5.9

<OT>The second loop is correct because you made pairs of strings and
integers (the default type for numeric literals). If you do something
like 'make_pair( "hi", short(0) )', then the first loop should
work.</OT>

Cheers! --M

Jul 28 '06 #3
mlimber wrote:
Kamran wrote:
>>Having problem with boost and stuck.
I have the following:

std::map <std::string, boost::anybinar yHeader;

and somewere else I write:
---------------
binaryHeader. insert(make_pai r("job", 0));
binaryHeader. insert(make_pai r("line", 0));
binaryHeader. insert(make_pai r("reel", 0));
binaryHeader. insert(make_pai r("Ensemble", 0));
---------------
further down in another function the following does not work:
---------------
for( map<std::string , boost::any>::it erator iter =
binaryHeader. begin(); iter != binaryHeader.en d(); iter++)
cout << any_cast<string >((*iter).first ) << " is " <<
boost::any_cast <short>((*iter) .second) << endl;
---------------
whereis this works perfectly(repla cing <shortwith <int>):
---------------
for( map<std::string , boost::any>::it erator iter =
binaryHeader. begin(); iter != binaryHeader.en d(); iter++) {
cout << any_cast<string >((*iter).first ) << " is " <<
boost::any_cast <int>((*iter).s econd) << endl;
----------------
What is wrong ? Isn't "boost::any " supposed to take 'any' type ?


For help with portions of Boost that are not part of TR1, you should
ask on the Boost User list. See this FAQ for what is on-topic here:

http://www.parashift.com/c++-faq-lit...t.html#faq-5.9

<OT>The second loop is correct because you made pairs of strings and
integers (the default type for numeric literals). If you do something
like 'make_pair( "hi", short(0) )', then the first loop should
work.</OT>

Cheers! --M
Thanks a lot. It worked. And sorry, I was not aware that there was a
mailing list for boost though I should have known.

Kamran
Jul 28 '06 #4
Thanks a lot. It worked. And sorry, I was not aware that there was a
mailing list for boost though I should have known.
you shouldn't have to sign up for a stinkin mailing list for every tool
you want help with. If I did then I'd be subscribed to several hundred
and would never get thru all the irrelevant emails. projects SHOULD use
USENET as a preferred support forum.
Jul 29 '06 #5
* noone:
>Thanks a lot. It worked. And sorry, I was not aware that there was a
mailing list for boost though I should have known.

you shouldn't have to sign up for a stinkin mailing list for every tool
you want help with. If I did then I'd be subscribed to several hundred
and would never get thru all the irrelevant emails. projects SHOULD use
USENET as a preferred support forum.
<url: news://news.gmane.org/gmane.comp.lib. boost.devel>

--
A: Because it messes up the order in which people normally read text.
Q: Why is it such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on usenet and in e-mail?
Jul 29 '06 #6
On Sat, 29 Jul 2006 09:24:32 +0200, Alf P. Steinbach wrote:
* noone:
>>Thanks a lot. It worked. And sorry, I was not aware that there was a
mailing list for boost though I should have known.

you shouldn't have to sign up for a stinkin mailing list for every tool
you want help with. If I did then I'd be subscribed to several hundred
and would never get thru all the irrelevant emails. projects SHOULD use
USENET as a preferred support forum.

<url: news://news.gmane.org/gmane.comp.lib. boost.devel>
lemme rephrase, projects should allow ANONYMOUS USENET as a preferred
support forum.
Jul 29 '06 #7
* noone:
On Sat, 29 Jul 2006 09:24:32 +0200, Alf P. Steinbach wrote:
>* noone:
>>>Thanks a lot. It worked. And sorry, I was not aware that there was a
mailing list for boost though I should have known.
you shouldn't have to sign up for a stinkin mailing list for every tool
you want help with. If I did then I'd be subscribed to several hundred
and would never get thru all the irrelevant emails. projects SHOULD use
USENET as a preferred support forum.
<url: news://news.gmane.org/gmane.comp.lib. boost.devel>

lemme rephrase, projects should allow ANONYMOUS USENET as a preferred
support forum.
Well, I don't know what "anonymous usenet" is and I'm an old hand.

Anyway, it's off-topic. <g>

--
A: Because it messes up the order in which people normally read text.
Q: Why is it such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on usenet and in e-mail?
Jul 29 '06 #8

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