Expand description
§Deferred Vector Library
DeferredVec
is a Rust library providing a generic, lazily-initialized vector structure.
This structure is designed for scenarios where the initialization of a large or
resource-intensive vector should be deferred until it’s actually needed.
Developed by Prof. Afonso Miguel - PUCPR, this library is ideal for applications where performance and efficient resource management are critical.
§Features
- Laziness: The vector is not initialized until it’s explicitly accessed. This lazy initialization is beneficial for performance in cases where the vector might not be used immediately or at all.
- Flexibility: Works with any type
T
that implements theClone
trait, allowing for a wide range of applications. - Custom Initialization: The vector is initialized using a user-provided function, offering flexibility in how the vector’s contents are determined.
§Usage
To use DeferredVec
, define a fetch_function
that returns the initial state of the
vector when called. The DeferredVec
struct can then be instantiated with this function.
The vector remains uninitialized (None
) until methods like get
or len
are called,
at which point fetch_function
is invoked to initialize the vector.
§Examples
Basic usage:
let mut deferred_vector = DeferredVec::new(|| vec![1, 2, 3]);
assert_eq!(deferred_vector.is_deferred(), true);
let initialized_vector = deferred_vector.get();
assert_eq!(deferred_vector.is_deferred(), false);
§Testing
The module includes unit tests to verify the functionality, especially focusing on the lazy initialization and basic vector operations.
§Disclaimer
This code is provided as-is, without warranty. Users should thoroughly test it in their own applications before any production use.
§Author
Prof. Afonso Miguel - PUCPR - Original implementation and documentation.
§License
This project is licensed under the MIT License - see the LICENSE file for details.
Structs§
- Deferred
Vec - A generic struct
DeferredVec
for lazily initializing a vector.