Resource acquisition is initialization
Resource acquisition is initialization (RAII) is a resource-management pattern that ties resource ownership and release to the lifetime of an object or scope.
100 C++ Mistakes and How to Avoid Them
RAII is a C++ resource-management idiom that binds resource lifetime to the lifetime of an object.
- How it is used
- Coordinates dynamic and limited-resource management across normal execution and exception paths.
- How deep it goes
- Explains ownership, destructors, exceptions, and smart-pointer implementations, while deferring resource-specific management classes.
- Examples
- Uses buffers, deques, grades, files, and student objects to contrast raw-pointer cleanup with RAII.
- What you can do after
- Apply it via std::unique_ptr and std::shared_ptr to automate cleanup and express ownership.
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Idiomatic Rust
Resource acquisition is initialization is a resource-management pattern in which acquiring a resource is tied to initializing an object and releasing it to that object's destruction.
- How it is used
- Uses RAII to connect ownership, scope-based cleanup, and synchronization in Rust.
- How deep it goes
- Explains scope, moves, destruction, and Drop, then traces standard-library resource guards through a threaded example.
- Examples
- Contrasts C leaks with C++ cleanup, moves a String into a Vec, and coordinates threads with Mutex and Condvar.
- What you can do after
- Build it from scratch by implementing Drop for resource-owning types, or apply it via Rust's containers and synchronization guards.
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Learn C++ by Example
Resource acquisition is initialization is a C++ resource-management technique that acquires a resource during object construction and releases it during object destruction.
- How it is used
- Manages memory, container elements, and coroutine lifetimes through object scope and destruction.
- How deep it goes
- Explains construction, destruction, ownership, custom deleters, and rule-of-zero consequences without detailing compiler-generated lifetime mechanics.
- Examples
- Uses vectors of smart pointers and coroutine promise pointers as concrete lifetime-management examples.
- What you can do after
- Apply it via C++ containers, smart pointers, and custom deleters to automate resource cleanup.
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C++ Concurrency in Action, Second Edition
Resource Acquisition Is Initialization is a C++ programming idiom that binds resource ownership and release to object lifetime.
- How it is used
- Uses object lifetime to ensure resources are released on scope exit, including exceptional exits.
- How deep it goes
- Works through destructor behavior with thread and mutex examples, including cleanup during exceptions.
- Examples
- Demonstrates a thread_guard that joins a thread and std::lock_guard protecting a shared list.
- What you can do after
- Apply it via std::lock_guard or a thread guard to release mutexes or join threads on normal and exceptional exits.
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Related concepts
- lock_guardimplemented by · std::lock_guard is a C++ standard library class template that acquires a mutex when constructed and releases it when destroyed.
- Rustused by · Rust is a statically typed systems programming language designed for performance, concurrency, and memory safety without requiring garbage collection.
- design patternkind of · A design pattern is a reusable, general solution structure for a recurring software design problem in a particular context.
- std::shared_ptrused by · std::shared_ptr is a C++ standard-library smart pointer that enables multiple owners to share ownership of a dynamically allocated object.
- std::unique_ptrimplemented by · std::unique_ptr is a C++ standard-library smart pointer that provides exclusive ownership of a dynamically allocated object and manages its lifetime.
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