c++ cannot bind non-const lvalue reference rvalue diagnosis error fix

Swift UIKit UserDefaults user preferences data persistence iOS development

memory leaks UIKit view controller strong reference cycles retain cycles Xcode Instruments

Swift retain cycles memory leaks weak reference unowned reference memory management

move semantics C++11 rvalue references move constructor performance optimization

C++ Avoid Copies Move Semantics References Smart Pointers Performance

C++ owning_view ref_view range-v3 library ownership semantics reference view collections

Avoid cycles shared_ptr weak_ptr memory leaks C++ smart pointers reference counting

undefined reference vtable C++ virtual functions linker error class implementation pure virtual functions debugging C++

C++ std::string_view dangling references safe usage string handling

C++ polymorphism object slicing base class derived class pointers references

SwiftUI preference keys data binding view hierarchy

Swift enums raw values persist enum cases UserDefaults Swift programming save user preferences

C++ undefined reference linker errors C++ compilation link errors solutions

SwiftUI UserDefaults User Preferences AppStorage Swift Programming

PDF rendering Swift PDFKit iOS development document handling ` for easy reference. - A description of the document's purpose is included in the ``. - An example Swift code snippet is provided within a `` tag and the code syntax is highlighted wit

Value Semantics Reference Semantics Programming Concepts Data Manipulation Memory Management

Prevent retain cycles Swift closures Swift delegates Memory management Weak references Unowned references

C++ pass-by-value pass-by-reference function arguments programming concepts

Swift weak references unowned references memory management retain cycles