rustHow to get all enum values in Rust

To get all enum values in Rust, you can use the std::mem::size_of_val function to get the size of the enum type and then use a loop to iterate through all the possible values. For example, if you have an enum type called MyEnum with 4 variants, you can use the following code to get all the enum values:

let enum_size = std::mem::size_of_val(&MyEnum::Variant1);
for i in 0..enum_size {
    let enum_value = MyEnum::from_u8(i).unwrap();
    println!("{:?}", enum_value);
}

This will print out all the enum values, e.g. Variant1, Variant2, Variant3, and Variant4.

The std::mem::size_of_val function returns the size of the enum type in bytes, which is then used to iterate through all the possible values. The MyEnum::from_u8 function is used to convert the index of the loop into an enum value. The unwrap function is used to handle any errors that may occur when converting the index to an enum value.

Helpful links

• std::mem::size_of_val
• Enum::from_u8
• Result::unwrap

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