Re: [boost] Concatenating int value to string ..??

Subject: Re: [boost] Concatenating int value to string ..??
From: Rahul Mathur (srivmuk_at_[hidden])
Date: 2013-11-02 06:19:02

YES, it's a run time exception could you suggest how to handle this ..

On Sat, Nov 2, 2013 at 3:11 PM, Andrey Semashev
<andrey.semashev_at_[hidden]>wrote:

> On Saturday 02 November 2013 15:05:45 Rahul Mathur wrote:
> >
> > On Sat, Nov 2, 2013 at 2:39 PM, Andrey Semashev
> >
> > <andrey.semashev_at_[hidden]>wrote:
> > > On Saturday 02 November 2013 14:14:18 Rahul Mathur wrote:
> > > > All,
> > > >
> > > > I wish to have string (combination of string value and int value)
> which
> > > > increments until 100. The code is as below -
> > > >
> > > > ---
> > > > #include <iostream>
> > > > #include <cstdlib>
> > > > #include <string>
> > > > #include <boost/lexical_cast.hpp>
> > > >
> > > > using namespace std;
> > > >
> > > > int main() {
> > > >
> > > >         std::string TID = "Apple";
> > > >         int TagID = 01, Value = 000 /* 100 IDs*/;
> > > >         std::string TagName, TagInitial, TagUId;
> > > >         TagName = TID + boost::lexical_cast<std::string>(TagID); //
> > >
> > > Should
> > >
> > > > be as -> Apple01
> > > >
> > > >         TagInitial = TagName +
> boost::lexical_cast<std::string>(Value);
> > >
> > > //
> > >
> > > > Should be as -> Apple01000
> > > >
> > > >         int i = boost::lexical_cast<int>(TagInitial) + 1; // Should
> be
> > > >         as
> > > >
> > > > -> Apple01001
> > > >
> > > >         TagUId = boost::lexical_cast<std::string>(i);
> > > >         std::cout << "Tag ID .." << TagUId << endl;
> > > >
> > > > }
> > > >
> > > > I get below error message -
> > > >
> > > > --
> > > > terminate called after throwing an instance of
> > >
> > >
> 'boost::exception_detail::clone_impl<boost::exception_detail::error_info_i
> > > nj>
> > > > ector<boost::bad_lexical_cast>
> > > >
> > > > >'
> > > > >
> > > >   what():  bad lexical cast: source type value could not be
> interpreted
> > >
> > > as
> > >
> > > > target
> > > > Aborted (core dumped)
> > > > --
> > > >
> > > > Any clue?
> > >
> > > Apple01000 cannot be interpreted as an integer, that's why
> > > boost::lexical_cast<int>(TagInitial) throws.
> >
> > I don't think so.
> >
> > It compiled successfully ( $ g++ test.cpp -o test -lboost_system
> > -lboost_thread ) with GCC-Boost v-1.54 but while linking and execution it
> > gives error as shared.
> >
> > I think if I can know - How to support lexical or what is the build
> command
> > to support lexical analysis of Boost during Boost-v1.54 build process
> with
> > toolset of gcc? I do see lexical_cast.hpp file in include file of
> > Boost-v1.54 while building.
>
> I don't understand. You get a run time exception. You do know that
> lexical_cast operates at run time, don't you?
>
> PS: Don't top post, please.
>
>
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