


Example of accessing this-modified member function inside a js object_Basic knowledge
Use wrapper to encapsulate it so that it can be accessed both inside and outside the object
function MapPool(){
function createMarker(name, lat, lng, state){
var marker = new AMap.Marker({
position : new AMap.LngLat(lng, lat),
});
//the function mapMoveTo is not accessible here too
AMap.event.addListener(marker, "click",function(e){
//moveMapTo(key, name, state)
//or this.moveMapTo(key, name, state) will raise an unresolved function error
//you should write wrapper function as a member variable
_mapMoveTo(key, name, state);
});
}
var _mapMoveTo = function(key, name, state){
//TODO
}
this.mapMoveTo = function(key, name, state) {
_mapMoveTo(key, name, state);
}
}

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The error handling mechanisms in C++ member functions include error codes, assertions and exception mechanisms. The error code directly returns the error value; the assertion checks the assumption and throws an exception if it is not true; the exception captures serious errors and handles them through try-catch blocks. In a practical case, the push_back() function of the Vector class throws a std::bad_alloc exception when the capacity is insufficient. The user can catch and handle the exception through try-catch.

Member functions are functions defined in the context of a class and associated with an object, and can access object data and methods. To make it compatible with containers, a custom class must provide assignment operators, equality and inequality operators, and comparison operators. Additionally, to support iterators, classes should provide begin() and end() functions that return iterators to the starting and ending elements of the container, as well as operators that dereference and increment iterators.

Member function overloading allows functions with the same name to be defined for the same class, distinguished by parameter and return value types. Polymorphism allows derived class objects to exhibit different behaviors by inheriting base class methods. When the base class reference points to a derived class object, calling the base class method will execute the derived class implementation that matches the object type. Overloading and polymorphism play a vital role in the implementation of the instruction set of the virtual machine. Overloading supports different operations based on the instruction type, while polymorphism supports different types of instructions to exhibit different behaviors.

Member function memory management and life cycle: Memory allocation: Member functions allocate memory when the object is created. Object life cycle: member functions are bound to the object, created when the object is created, and destroyed when the object is destroyed. Constructor: called when an object is created to initialize data. Destructor: called when an object is destroyed to release resources.

Yes, function overloading works for member functions, subject to the following restriction: The overloaded member function must have a different parameter signature (type and number). Overloaded member functions cannot have the same return type and different parameter signatures.

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