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map<string,string> error

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map<string,string> error

 
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  #1
Nov 30th, 2008
I need help with inserting a string for both key and value to a map.
C++ Syntax (Toggle Plain Text) 
  1.  
  2. while(!myHuffFile.eof()){
  3. 		string word, code;
  4. 		int freq;
  5. 		myHuffFile >> word >> freq >> code;
  6. 		if(word == ""){
  7. 			break;
  8. 		}else{
  9.                         _fileMap.insert(pair<string,string>(word,code));
  10. 			_freqMap.insert(pair<string,int>(word,freq));
  11. 		}
  12. 	}


error:

error: conversion from `std::_Rb_tree_iterator<std::pair<const std::string, std::string> >' to non-scalar type `std::_Rb_tree_iterator<std::pair<const std::string, int> >' requested

can you please help me with this.

thanks

drjay
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Re: map<string,string> error

 
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  #2
Nov 30th, 2008
As written there is nothing wrong with this (except I think that you would benefit from a typedef. e.g.
c++ Syntax (Toggle Plain Text) 
  1. typedef std::map<std::string,int> mTYPE;
  2. mTYPE aMap;
  3. //....
  4. aMap.insert(mTYPE::value_type(word,i));

However, I would guess that you have swapped the declarations of fileMap and freqMap.

It that is not the problem, please make a short test program and post that.
Last edited by StuXYZ; Nov 30th, 2008 at 6:15 pm. Reason: error on code tag
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Re: map<string,string> error

 
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  #3
Nov 30th, 2008
there are two maps.
_fileMap<string,string> and the other is _freqMap<string, int>

_freqMap works fine but _fileMap doesn't. I don't think typedef will work here. I'll try it though.
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Re: map<string,string> error

 
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  #4
Nov 30th, 2008
i figured it out! thanks!
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