DynamicVar is a dynamic type for C++ that holds data in an internal std::string object.
I wrote this to use in some personal projects to facilitate conversions between types in UI, Databases and other services.
This type allows you to set its value as int, double, string, boolean and some others and get its value as well in various types.
The type contains some useful constructors and type overloading helping to use it with your application.
Note: Internally, the DynamicVar holds the valus as a std::string.
Allowed input types for values are 'int', 'int64_t', 'double', 'string', 'bool', 'char const *' and JsonMaker::JSON (see more at http...)
You can set the value by a simple assignment operation ('='), by the costructor or by using the 'set*' methods.
The set* methods are:
void setInt(int value);
void setInt64(int64_t value);
void setDouble(double value);
void setString(string value);
void setCStr(char* s);
void setBool(bool value);If you don't want to use the 'JsonMaker::JSON' type, currently you must remove the #include<JSON.h> from the DynamicVar.h header.
You can get the value by a simple assignment operation ('=') or by the 'get*' methods.
The get* methods are:
int getInt(function<void()> onError = [](){});
int64_t getInt64(function<void()> onError = [](){});
double getDouble(function<void()> onError = [](){});
string getString();
bool getBool(function<void()> onError = [](){});
void setBool(bool value);Excluding the 'getString' function, all other calls to get functions can result in internal conversion errors. For these cases, you can specify an anonymous function to be notified. Also, if an internal error occurs, the function will return a default value (0 for numbers, false for boolean and an empty JSON object for json).
DynamicVar tmp;
tmp.setInt(10);
cout << "The value of temp is " << tmp.getInt() << endl;DynamicVar tmp;
tmp.setInt(10);
cout << "The value of temp is " << tmp.getString() << endl;DynamicVar tmp(10);
cout << "The value of temp is " << tmp.getString() << endl;class MyClass{
private:
DynamicVar value;
public:
MyClass(DynamicVar initialValue): value(initialValue){}
DynamicVar getValue(){ return value }
};
MyClass tmp1(10);
MyClass tmp1("11");
MyClass tmp1(12.0);
cout << "The value of tmp1 is " << tmp1.getValue().getString() << endl;
cout << "The value of tmp2 is " << tmp2.getValue().getString() << endl;
cout << "The value of tmp3 is " << tmp3.getValue().getString() << endl;DynamicVar tmp1 = 10;
DynamicVar tmp2 = "11";
DynamicVar tmp3 = 12.0;
cout << "The value of tmp1 is " << tmp1.getString() << endl;
cout << "The value of tmp2 is " << tmp2.getString() << endl;
cout << "The value of tmp3 is " << tmp3.getString() << endl;
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent