# ChunkedVec
[](https://crates.io/crates/chunked_vec)
[](https://docs.rs/chunked_vec)
> **Note**: This is a learning project implementing a vector-like data structure with chunked storage.
ChunkedVec is a vector-like data structure that stores elements in fixed-size chunks. It provides a Vec-like interface while offering unique advantages in memory management and memory locality.
## Features
- Flexible chunk-based storage with compile-time or runtime configurable chunk size
- Standard vector-like interface with efficient operations
- Support for both fixed-size and default-size chunk construction
- O(1) random access time complexity
- Efficient memory allocation during growth
- Support for constructing from various types (Vec, Array, Slice, Iterator)
## Usage Examples
### Basic Usage with Default Chunk Size
```rust
use chunked_vec::ChunkedVec;
fn main() {
let mut vec = ChunkedVec::new();
vec.push(1);
vec.push(2);
vec.push(3);
assert_eq!(vec[0], 1);
assert_eq!(vec[1], 2);
assert_eq!(vec[2], 3);
}
```
### Using Macro for Quick Initialization
```rust
use chunked_vec::{chunked_vec, ChunkedVec};
fn main() {
// Create an empty ChunkedVec
let vec: ChunkedVec<i32> = chunked_vec![];
assert_eq!(vec.len(), 0);
// Create a ChunkedVec with initial values
let vec = chunked_vec![1, 2, 3, 4, 5];
assert_eq!(vec[0], 1);
// Create a ChunkedVec with repeated values
let vec = chunked_vec![42; 5]; // [42, 42, 42, 42, 42]
assert_eq!(vec.len(), 5);
}```
### Using Fixed Chunk Size
```rust
use chunked_vec::{ChunkedVec, ChunkedVecSized};
fn main() {
// Create a ChunkedVec with chunk size of 8
let mut vec: ChunkedVec<i32, 8> = ChunkedVecSized::new();
vec.push(1);
// Pre-allocate space for elements
let vec = ChunkedVecSized::<i32, 8>::with_capacity(100);
assert_eq!(vec.capacity(), 104);// Actual capacity of ChunkedVec rounds up to chunk size
}
```
### Converting from Other Collections
```rust
use chunked_vec::ChunkedVec;
fn main() {
// From Vec
let vec = vec![1, 2, 3];
let chunked: ChunkedVec<i32> = vec.into();
// From array
let arr = [1, 2, 3];
let chunked = ChunkedVec::from(arr);
// From slice
let slice: &[i32] = &[1, 2, 3];
let chunked = ChunkedVec::from(slice);
// From iterator
let chunked: ChunkedVec<i32> = (0..10).collect();
}
```
## Current Implementation Status
### Implemented Features
- Comprehensive constructors (`new`, `with_capacity`, `with_chunk_count`)
- Push operation (supports all types)
- Index-based access (`get`, `get_mut`, `Index`/`IndexMut` traits)
- Length and capacity queries (`len`, `capacity`, `allocated_capacity`)
- Fixed-size chunk support via `ChunkedVecSized`
- From/FromIterator implementations for various types
- Safe and unsafe getter methods
- Efficient memory management
### Planned Features
- Advanced chunk-level operations
- Custom allocator support
- More collection traits implementation
- Performance optimizations for specific use cases
## Contributing
This is an open learning project. Contributions and suggestions are welcome! Feel free to:
- Report bugs and suggest features
- Submit pull requests
- Share your use cases and feedback
- Help improve documentation
```