Enum Version 

pub enum Version {
    V2012,
    V2008,
}

The Version policy element is used within a policy and defines the version of the policy language.

If you do not include a Version element, the value defaults to 2008-10-17, but newer features, such as policy variables, will not work with your policy. For example, variables such as ${aws:username} aren’t recognized as variables and are instead treated as literal strings in the policy.

From IAM JSON Policy Elements: Version.

Variants

V2012

This is the current version of the policy language, and you should always include a Version element and set it to 2012-10-17. Otherwise, you cannot use features such as policy variables that were introduced with this version.

V2008

This was an earlier version of the policy language. You might see this version on older existing policies. Do not use this version for any new policies or when you update any existing policies.

Trait Implementations

impl Clone for Version

fn clone(&self) -> Version

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Version

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Version

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Version

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.