[英]Error populating a vector of vectors: no matching function to call for std::basic_string::push_back
I'm trying to do Accelerated C++'s example 5.1 in which I am supposed to create a permuted index. 我正在尝试做Accelerated C ++的示例5.1,其中应该创建一个置换索引。 So I am trying to put each rotation (which come out fine as I tested with the
cout
statements first) into a vector of itself. 因此,我尝试将每个旋转(在我首先使用
cout
语句进行测试时都可以正常运行)放入自身的向量中。
#include <cctype>
#include <iostream>
#include <string>
#include <vector>
#include "split.h"
using namespace std;
void rotate(vector<string> lineSplit){
// create vector of vectors, length is the amount
// of words. Each vector will contain a rotation
// std::vector<string> rotations(lineSplit.size(), "");
std::vector<string> rotations(lineSplit.size(), "");
for (int i=0; i<lineSplit.size(); i++){
cout << "New Rotation: " << endl;
for (int j=i; j<lineSplit.size(); j++){
rotations[i].push_back(lineSplit[j]);
cout << lineSplit[j] << endl;
}
// cout << "START IN HERE!" << endl;
for (int j=0; j<i; j++){
rotations[i].push_back(lineSplit[j]);
cout << lineSplit[j] << endl;
}
}
}
int main()
{
string line="The quick brown fox";
vector<string> lineSplit = split(line);
cout << "size of lineSplit is: " << lineSplit.size() << endl;
rotate(lineSplit);
}
So rotations should be a vector of vectors, each one containing a rotation (as per the comment statements) I thought I would be able to add to each individual vector with "rotations[i].push_back(lineSplit[j])" but the compiler is complaining: 因此,旋转应该是向量的向量,每个向量都包含一个旋转(根据注释语句),我认为我可以使用“ rotations [i] .push_back(lineSplit [j])”将其添加到各个向量中,编译器抱怨:
main.cpp: In function ‘void rotate(std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >)’:
main.cpp:23: error: no matching function for call to ‘std::basic_string<char, std::char_traits<char>, std::allocator<char> >::push_back(std::basic_string<char, std::char_traits<char>, std::allocator<char> >&)’
/usr/include/c++/4.2.1/bits/basic_string.h:869: note: candidates are: void std::basic_string<_CharT, _Traits, _Alloc>::push_back(_CharT) [with _CharT = char, _Traits = std::char_traits<char>, _Alloc = std::allocator<char>]
main.cpp:28: error: no matching function for call to ‘std::basic_string<char, std::char_traits<char>, std::allocator<char> >::push_back(std::basic_string<char, std::char_traits<char>, std::allocator<char> >&)’
/usr/include/c++/4.2.1/bits/basic_string.h:869: note: candidates are: void std::basic_string<_CharT, _Traits, _Alloc>::push_back(_CharT) [with _CharT = char, _Traits = std::char_traits<char>, _Alloc = std::allocator<char>]
Did I initialize rotations incorrectly? 我是否初始化旋转错误?
rotations[i].push_back(lineSplit[j]);
rotations
is vector of string, so rotations[i]
is string. rotations
是字符串的向量,因此rotations[i]
是字符串。 lineSplit
is vector of string, so lineString[i]
is string. lineSplit
是字符串的向量,因此lineString[i]
是字符串。 You can push_back
only chars in string, not string in string. 您只能
push_back
字符串中的字符,而不能字符串中的字符。 Look like, that rotations
should have type vector<vector<string> >
. 看起来,
rotations
应具有类型vector<vector<string> >
。
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