Rust programming language has a moderate level of difficulty when it comes to learning. While the syntax is relatively easy to understand, the borrow checker and ownership system can be challenging for beginners.

Rust has a steep learning curve due to its unique features like ownership, borrowing, and lifetime. These features are designed to ensure memory safety and prevent common errors like buffer overflows and null pointer dereferences. However, they require a paradigm shift in the way developers think about memory management.

Another challenge with Rust is its documentation. While there are plenty of resources available, some of them assume prior knowledge of systems programming or advanced concepts in computer science.

However, Rust has a vibrant community and a strong ecosystem of packages and libraries. The Rust community is known for its helpfulness and welcoming attitude towards newcomers. Many resources, like Rust by Example and Rust Programming Language book, are designed to make the learning process easier.

Overall, the difficulty level of learning Rust programming language can be rated as moderate. With patience, persistence, and the right resources, anyone can become proficient in Rust.
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