list<string> insertion fails

[banangroda]

Compilation fails at "line.insert(li ne.end(), x.begin(), i);" and I
can't figure out why. Here is the code:

/*
5-1. Design and implement a program to produce a permuted index. A
permuted
index is one in which each phrase is indexed by every word in the
phrase.
*/

#include <cctype>
#include <iostream>
#include <string>
#include <list>

using std::cin;
using std::cout;
using std::isspace;
using std::string;
using std::list;

int main() {
string x;
list<list<strin g indexes;
while (getline(cin, x)) {
string::const_i terator i = x.begin();
list<stringline ;
while (i < x.end()) {
while (i < x.end() && isspace(*i)) x.erase(*(i++)) ;
while (i < x.end() && !isspace(*i)) ++i;
line.insert(lin e.end(), x.begin(), i);
}
indexes.push_ba ck(line);
}
for (list<list<stri ng::const_itera tor i = indexes.begin() ;
i != indexes.end(); ++i) {
for (list<string>:: const_iterator j = i->begin(); j != i->end(); +
+j)
cout << *j << std::endl;
}
return 0;
}

... and here is the compilation error:
g++ 5-1.cpp -o 5-1 -Wall
5-1.cpp: In function ‘int main()’:
5-1.cpp:26: error: no matching function for call to
‘std::list<std: :basic_string<c har, std::char_trait s<char>,
std::allocator< char, std::allocator< std::basic_stri ng<char,
std::char_trait s<char>, std::allocator< char >

>::insert(std:: _List_iterator< std::basic_stri ng<char,

std::char_trait s<char>, std::allocator< char >,
__gnu_cxx::__no rmal_iterator<c har*, std::basic_stri ng<char,
std::char_trait s<char>, std::allocator< char >,
__gnu_cxx::__no rmal_iterator<c onst char*, std::basic_stri ng<char,
std::char_trait s<char>, std::allocator< char >&)’
/usr/include/c++/4.2/bits/list.tcc:86: note: candidates are: typename
std::list<_Tp, _Alloc>::iterat or std::list<_Tp,
_Alloc>::insert (std::_List_ite rator<_Tp>, const _Tp&) [with _Tp =
std::basic_stri ng<char, std::char_trait s<char>, std::allocator< char>

>, _Alloc = std::allocator< std::basic_stri ng<char,

std::char_trait s<char>, std::allocator< char >]
/usr/include/c++/4.2/bits/stl_list.h:808: note: void
std::list<_Tp, _Alloc>::insert (std::_List_ite rator<_Tp>, size_t, const
_Tp&) [with _Tp = std::basic_stri ng<char, std::char_trait s<char>,
std::allocator< char, _Alloc =
std::allocator< std::basic_stri ng<char, std::char_trait s<char>,
std::allocator< char >]
make: *** [5-1] Error 1

[Victor Bazarov]

Re: list&lt;string& gt; insertion fails

banangroda wrote:

Compilation fails at "line.insert(li ne.end(), x.begin(), i);" and I
can't figure out why. Here is the code:
>
/*
5-1. Design and implement a program to produce a permuted index. A
permuted
index is one in which each phrase is indexed by every word in the
phrase.
*/
>
#include <cctype>
#include <iostream>
#include <string>
#include <list>
>
using std::cin;
using std::cout;
using std::isspace;
using std::string;
using std::list;
>
int main() {
string x;
list<list<strin g indexes;
while (getline(cin, x)) {
string::const_i terator i = x.begin();
list<stringline ;
while (i < x.end()) {
while (i < x.end() && isspace(*i)) x.erase(*(i++)) ;
while (i < x.end() && !isspace(*i)) ++i;
line.insert(lin e.end(), x.begin(), i);
}
indexes.push_ba ck(line);
}
for (list<list<stri ng::const_itera tor i = indexes.begin() ;
i != indexes.end(); ++i) {
for (list<string>:: const_iterator j = i->begin(); j != i->end(); +
+j)
cout << *j << std::endl;
}
return 0;
}
[..]

Your 'line' is a list of strings. Your 'x.begin()' is an iterator in a
string. If you intended to insert the entire 'x' string into your list
of strings (append), then you probably wanted to do

line.insert(lin e.end(), x);

If not, describe to us *what it is you're trying to accomplish*.

V
--
Please remove capital 'A's when replying by e-mail
I do not respond to top-posted replies, please don't ask

[banangroda]

Re: list&lt;string& gt; insertion fails

On Jul 29, 8:17 pm, Victor Bazarov <v.Abaza...@com Acast.netwrote:

banangroda wrote:

Compilation fails at "line.insert(li ne.end(), x.begin(), i);" and I
can't figure out why. Here is the code:

>

/*
   5-1. Design and implement a program to produce a permuted index.A
permuted
   index is one in which each phrase is indexed by every word in the
phrase.
*/

>

#include <cctype>
#include <iostream>
#include <string>
#include <list>

>

using std::cin;
using std::cout;
using std::isspace;
using std::string;
using std::list;

>

int main() {
   string x;
   list<list<strin g indexes;
   while (getline(cin, x)) {
           string::const_i terator i = x.begin();
           list<stringline ;
           while (i < x.end()) {
                   while (i < x.end() && isspace(*i)) x.erase(*(i++)) ;
                   while (i < x.end() && !isspace(*i)) ++i;
                   line.insert(lin e.end(), x.begin(), i);
           }
           indexes.push_ba ck(line);
   }
   for (list<list<stri ng::const_itera tor i = indexes.begin() ;
   i != indexes.end(); ++i) {
           for (list<string>:: const_iterator j = i->begin(); j != i->end(); +
+j)
                   cout << *j << std::endl;
   }
   return 0;
}
[..]

>
Your 'line' is a list of strings.  Your 'x.begin()' is an iterator in a
string.  If you intended to insert the entire 'x' string into your list
of strings (append), then you probably wanted to do
>
    line.insert(lin e.end(), x);
>
If not, describe to us *what it is you're trying to accomplish*.
>
V
--
Please remove capital 'A's when replying by e-mail
I do not respond to top-posted replies, please don't ask

I want to insert the contents of 'x' from its start through 'i' into
'line'.

[Victor Bazarov]

Re: list&lt;string& gt; insertion fails

banangroda wrote:

[..]
I want to insert the contents of 'x' from its start through 'i' into
'line'.

See 'substr' member of 'string'.

V
--
Please remove capital 'A's when replying by e-mail
I do not respond to top-posted replies, please don't ask