collect-all

A macro to create collection literals for any type! Think of vec!, but for any collection type!

Internally, this just uses the Iterator::collect() method. Since collect is powered by FromIterator, implement it to use this macro for your own types!

Examples

Basic use, inferring the type of the collection

```rust use collect_all::collect; use std::collections::HashSet;

let hashset: HashSet = collect![1, 2, 3]; asserteq!(HashSet::fromiter([1, 2, 3]), hashset); ```

Specifying the type in the macro invocation

```rust use collect_all::collect; use std::collections::HashMap;

let hashmap = collect![HashMap<&str, u8>: ("one", 1), ("two", 2)]; asserteq!(HashMap::fromiter([("one", 1), ("two", 2)]), hashmap); ```

Creating with a given capacity

```rust use collect_all::collect; use std::path::PathBuf;

let pathbuf = collect![PathBuf: "path", "to", "file"; 10]; assert_eq!(PathBuf::from("path/to/file"), pathbuf); assert!(pathbuf.capacity() >= 10); ```

Note that this relies on a few things that are not strictly guaranteed for a given collection:

1. with_capacity is a method of the target type (for example, see Vec::with_capacity)
2. The target type implements Extend

License

This crate is licensed under the MIT license.