rustHow to convert Rust bytes to a u32?

To convert Rust bytes to a u32, you can use the from_be_bytes method from the std::convert::TryInto trait. This method takes a slice of bytes and returns a Result containing either the converted value or an error.

Example code

let bytes = [0x00, 0x00, 0x00, 0x2A];
let value = u32::from_be_bytes(bytes);
assert_eq!(value, 42);

Output example

assertion successful

Code explanation

• let bytes = [0x00, 0x00, 0x00, 0x2A];: This line creates a byte array containing the bytes to be converted.
• let value = u32::from_be_bytes(bytes);: This line calls the from_be_bytes method on the u32 type, passing in the byte array as an argument.
• assert_eq!(value, 42);: This line uses the assert_eq! macro to check that the value returned by the from_be_bytes method is equal to the expected value (in this case, 42).

Helpful links

• std::convert::TryInto
• assert_eq!

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