not compile

[박노중]

:::::::::::::::::::::::::::::::::::::::::source code::::::::::::::::::::::::::

#include <string>

#include <string.h>

#include <stdlib.h>

#include <stdio.h>

#include <errno.h>

using namespace std;

#include <iostream>

#include <sparsehash/dense_hash_map>

using google::dense_hash_map;      // namespace where class lives by default

using std::cout;

using std::endl;

using tr1::hash; //__gnu_cxx::hash; //ext::hash;  // or __gnu_cxx::hash, or maybe tr1::hash, depending on your OS

struct ST_SAVEKEYITEM

{

ST_SAVEKEYITEM()

{

memset(m_szKey, 0x00, sizeof(m_szKey));

memset(m_szValue, 0x00, sizeof(m_szValue));

}

~ST_SAVEKEYITEM()

{

memset(m_szKey, 0x00, sizeof(m_szKey));

memset(m_szValue, 0x00, sizeof(m_szValue));

}

char m_szKey[512];

char m_szValue[8192];

};

struct eqstr

{

bool operator()(const char* s1, const char* s2) const

{

return ((s1 == s2) || (s1 && s2 && strcmp(s1, s2) == 0));

}

};

struct StringToIntSerializer {

bool operator()(FILE* fp, const std::pair<const char*, ST_SAVEKEYITEM>& value) const {

if( fwrite(&value.first, sizeof(value.first), 1, fp) != 1 )

return false;

if( fwrite(&value.second, sizeof(value.second), 1, fp) != 1)

return false;

return true;

}

bool operator()(FILE* fp, std::pair<const char*, ST_SAVEKEYITEM>* value) const {

if( fread(&value->first, sizeof(value->first), 1, fp) != 1 )

return false;

if( fread(&value->second, sizeof(value->second), 1, fp) != 1 )

return false;

return true;

}

};

int32_t main( int32_t nArgc, char* pszArrArg[] )

{

ST_SAVEKEYITEM stSaveKey;

dense_hash_map<const char*, ST_SAVEKEYITEM, hash<const char*>, eqstr> months;

months.set_empty_key(NULL);

FILE* fp = fopen("hashtable.data", "r");

months.unserialize(StringToIntSerializer(), fp);

fclose(fp);

/*

months.set_empty_key(NULL);

strcpy(stSaveKey.m_szKey, "january");

strcpy(stSaveKey.m_szValue, "31");

months["january"] = stSaveKey;

strcpy(stSaveKey.m_szKey, "february");

strcpy(stSaveKey.m_szValue, "28");

months["february"] = stSaveKey;

*/

cout << "january key -> " << months["january"].m_szKey << endl;

cout << "january value -> " << months["january"].m_szValue << endl;

cout << "april   key  -> " << months["april"].m_szKey << endl;

/*

FILE* fp = fopen("hashtable.data", "w");

months.serialize(StringToIntSerializer(), fp);

fclose(fp);

*/

return 0;

}

:::::::::::::::::::::::::::::::::::::compile error message :::::::::::::::::::::::::::::::

# g++ -o test test.cc -I/usr/local/include

In file included from /usr/local/include/sparsehash/dense_hash_map:104,

                 from test.cc:9:

/usr/local/include/sparsehash/internal/densehashtable.h: In member function ‘bool google::dense_hashtable<Value, Key, HashFcn, ExtractKey, SetKey, EqualKey, Alloc>::unserialize(ValueSerializer, INPUT*) [with ValueSerializer = StringToIntSerializer, INPUT = FILE, Value = std::pair<const char* const, ST_SAVEKEYITEM>, Key = const char*, HashFcn = std::tr1::hash<const char*>, ExtractKey = google::dense_hash_map<const char*, ST_SAVEKEYITEM, std::tr1::hash<const char*>, eqstr, google::libc_allocator_with_realloc<std::pair<const char* const, ST_SAVEKEYITEM> > >::SelectKey, SetKey = google::dense_hash_map<const char*, ST_SAVEKEYITEM, std::tr1::hash<const char*>, eqstr, google::libc_allocator_with_realloc<std::pair<const char* const, ST_SAVEKEYITEM> > >::SetKey, EqualKey = eqstr, Alloc = google::libc_allocator_with_realloc<std::pair<const char* const, ST_SAVEKEYITEM> >]’:

/usr/local/include/sparsehash/dense_hash_map:356:   instantiated from ‘bool google::dense_hash_map<Key, T, HashFcn, EqualKey, Alloc>::unserialize(ValueSerializer, INPUT*) [with ValueSerializer = StringToIntSerializer, INPUT = FILE, Key = const char*, T = ST_SAVEKEYITEM, HashFcn = std::tr1::hash<const char*>, EqualKey = eqstr, Alloc = google::libc_allocator_with_realloc<std::pair<const char* const, ST_SAVEKEYITEM> >]’

test.cc:67:   instantiated from here

/usr/local/include/sparsehash/internal/densehashtable.h:1156: error: no match for call to ‘(StringToIntSerializer) (FILE*&, std::pair<const char* const, ST_SAVEKEYITEM>*)’

test.cc:41: note: candidates are: bool StringToIntSerializer::operator()(FILE*, const std::pair<const char*, ST_SAVEKEYITEM>&) const

test.cc:49: note:                 bool StringToIntSerializer::operator()(FILE*, std::pair<const char*, ST_SAVEKEYITEM>*) const

how to modify?????????

Thanks...

[1971 powerChina]

http://sourceforge.net/projects/pwwhashmap/

you can look this ,may be help you
在 2015年6月24日星期三 UTC+8下午12:49:27，박노중写道：