Github\Vector-Space-Model\README

	/************************************************************	
		
		README in Github local repository directory !
		
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2013.10.22      >> Week     >>  day

蟲 [ B U G ]
[ Where ] : doctxtname.cpp >> Ver. 24 
[ B U G ]  cannot pass objects of non-POD type 'struct std::string' through '...'
[ Solution ] :
Wrong Code : 
	snprintf( titleBuf, TXT_NAME_LEN, "%d%s", 20, txtSuffixTitle );
Correct Code :  
	snprintf( titleBuf, TXT_NAME_LEN, "%d%s", 20, txtSuffixTitle.c_str() );




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蟲 [ B U G ]: sort_firstDict.cpp 
base operand of `->' has non-pointer type `std::string' 
[ Solution ] 
Wrong : value->data.c_str()
Correct:value.c_str()
( declaration is "  std::string value;  " )

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蟲 [ B U G ]: in compareTerm.cpp :
Only 3 character of std::string will be copied into term1 and term2.
[ Solution ] :
Wrong Code :
	#define CMP_LEN 100
Correct Code :
	#define CMP_LEN 1000

================================================================
2013. 10. 21    >> Week 7   >> Monday


蟲 [ B U G ]:
currentPtr = *sPtr;    << SOMETHING WRONG !
[ Solution ] :
很酷唷, 這次改成是在實際引數反而是用 &。
這次形式引數反而是用 * 唷。 
實際引數 : insertNode( &dictNode, stemByPorter[ i ] ); /* 這是在 main() 內的實際呼叫 */
形式引數 : void insertNode( ListNodePtr *sPtr, std::string value ){}
補充說明 : typedef struct ListNode* ListNodePtr
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蟲 [ B U G ] :
[ Where ] : dictCpp.cpp ( about Ver. 11 )
[ B U G ] : dictCpp.cpp : no matching function for call to `strncpy(std::string&, const char*, int)'  
[ B U G ] : invalid conversion from `const char*' to `char*' 
WRONG   CODE :
	strncpy( tail->nextPtr->data, h2->data.c_str(), MAX_STR_LEN );
CORRECT CODE :
	strncpy( const_cast<char*>(tail->nextPtr->data.c_str()), h2->data.c_str(), MAX_STR_LEN );


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蟲 [ B U G ] :
[ Where ] : sort_firstDict.cpp
[ B U G ] : I printf each line. I found that strncmp( newPtr->data, value, MAX_STR_LEN ) will CRASH.
[ Solution ] : 
tutorial : http://stackoverflow.com/questions/1623769/is-there-any-safe-strcmp/1623778#1623778

<<

take a look, what the US DHS National Cyber Security Division recommends on this matter:
Ensure that strings are null terminated before passing into strcmp. This can be enforced by always placing a \0 in the last allocated byte of the buffer.
char str1[] ="something";
char str2[] = "another thing";
/* In this case we know strings are null terminated. Pretend we don't. */
str1[sizeof(str1)-1] = '\0';
str2[sizeof(str2)-1] = '\0';
/* Now the following is safe. */
if (strcmp(str1, str2)) { /* do something */ } else { /* do something 

>>   // End tutorial

HOWEVER, 
array[ ] is more like a "C-stlye" thing.
and many tutorials sugget that : Don't use array[]; instead, use std::string stringname 


蟲[ B U G ]:
no matching function for call to `strncmp(std::string&, char*&, int)'
[ Solution ] :
( PPS. from now on, I start my std::string life-style ! )
Wrong code : 
strcmp (word1, word2) 
Corrct code : 
x = strcmp(word1.c_str(), word2.c_str());

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蟲 [ B U G ]: sort_firstDict_ver_string.cpp


FINALLY, it's not because of the usage of strncmp( ) .
It's because adding the first listNode is a SPECIAL CASE !!!!
So Nicole adds these lines of code : 

		if( previousPtr != NULL ){ /* If currentPtr->data is the first node, this node is empty, and strncmp() will crash becuse this is NULL */
			termOrder = strncmp( value.c_str(), currentPtr->data.c_str(), value.size());
		}
		//printf("\nHello insert >>  termOrder = strcmp( ) " );
		//printf("\nHello insert >>  termOder is : %d.", termOrder );
      /* loop to find the correct location in the list */
      while ( currentPtr != NULL && termOrder > 0 && previousPtr != NULL ) { 

IMPORTANT ! If currentPtr->data is the first node, this node is empty, and strncmp() will CRASH becuse this is NULL.
	
/*==========================================================================*/
2013. 10. 20	>> Week 6	>> Sunday
when migrating from dev cpp to visual studio c++,
put this into >> project properties >> C/C++ >> other include directory : C:\Dev-Cpp\include

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蟲 [ B U G ] :
 fatal error C1021: invalid preprocessor command 'include_next'，
[ Solution ] : 
In control pannel, msvc's include should be prior to mingw's include.
 C:/Program Files/Microsoft Visual Studio/VC98/atl/include;C:/Program Files/Microsoft Visual Studio/VC98/mfc/include;C:/Program Files/Microsoft Visual Studio/VC98/include;C:/Modeltech_6.3f/include;C:/Program Files/Microsoft DirectX 9.0 SDK (February 2005)/Samples/C++/DirectShow/Samples/C++/DirectShow/BaseClasses;C:/Modeltech_6.3f/gcc-3.3.1-mingw32/include

 ( tutorial : http://blog.csdn.net/aboy85/article/details/4208915 )
 
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蟲 [ B U G ] : 
when I do rmvStop() in a loop in main() many times, at first, the program runs well.
but in the 4-th loop, main() can't recive a succussful-return from rmvStop().
[ Solution ] : 
So I print out some codes in rmvStop().
And then I observed that, 

	...
	stopNum is :  319  .
	tokenSize is : 300 .
	...
	stopNum is :  638  .
	tokenSize is : 300 .
	...
	stopNum is :  957  .
	tokenSize is : 300 .
 
Therefore, in txtToArray(), I must reset stopNum to zero.
SO COOL !!!!!!!  The bug is fixed !!!
 
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蟲 [ B U G ] : 
I need to press "Enter" key on keyboard 1095 times for the for-loop in main( ) to loop 1095 times.
Solution : 
Yeah ! Nicole debugs successfully by herself ! 
Discard this line in porter.cpp : system("PAUSE");

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蟲 [ B U G ] :
Too many open files 
In iteration xxxx i get an "Too many open files" error when opening the xxxx-th file.
Solution : 
Yeah ! Nicole debugs successfully by herself ! 
Nicole must add this line of code in function txtToArray( ) : 
	   fclose(txtFile);

Ha~ Don't forget that txtFile is declared 1095 times because everytime when txtToArray( ) is entered, 
this line will declare again txtFile : void txtToArray( FILE *txtFile, char twoDimArr[][ MAX_STR_LEN ], int & wordCount )	 
Ha~ Just be careful !   
	   
	   
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