The Startup
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The Startup

Understanding Closures in Rust.

Summary

  • Closures are a combination of a function pointer (fn) and a context.
  • A closure with no context is just a function pointer.
  • A closure which has an immutable context belongs to Fn.
  • A closure which has a mutable context belongs to FnMut.
  • A closure that owns its context belongs to FnOnce.

Understanding the different types of closures in Rust.

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