Conversion of string values

[Cpp]
// Wang zhiquan
 
# Ifndef _ StringHelper _ H __
# Define _ StringHelper _ H __
 
# Include <string>
# Include <sstream>
 
# Define iToStdS (v) ValueToString <int> (v). str ()
# Define fToStdS (v) ValueToString <float> (v). str ()
# Define dToStdS (v) ValueToString <double> (v). str ()
 
# Define StdSToI (v) StringToValue <int> (v). value ()
# Define StdSToF (v) StringToValue <float> (v). value ()
# Define StdSToD (v) StringToValue <double> (v). value ()
 
// Convert numeric values to strings
Template <typename T>
Class ValueToString
{
Public:
 
ValueToString (T v)
{
Std: stringstream strem;
Strem <v;
_ Str = strem. str ();
}
 
Std: string & str ()
{Return _ str ;}
 
Private:
Std: string _ str;
};
 
// Convert string to numeric value
Template <typename T>
Class StringToValue
{
Public:
 
StringToValue (const std: string & s)
{
Std: stringstream strem (s );
Strem> _ val;
}
 
T value ()
{
Return _ val;
}
 
Private: www.2cto.com
 
T _ val;
};
 
# Endif
Author: xuhongwei0411