serde

Trait Serialize

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pub trait Serialize {
    // Required method
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
       where S: Serializer;
}
Expand description

A data structure that can be serialized into any data format supported by Serde.

Serde provides Serialize implementations for many Rust primitive and standard library types. The complete list is here. All of these can be serialized using Serde out of the box.

Additionally, Serde provides a procedural macro called serde_derive to automatically generate Serialize implementations for structs and enums in your program. See the derive section of the manual for how to use this.

In rare cases it may be necessary to implement Serialize manually for some type in your program. See the Implementing Serialize section of the manual for more about this.

Third-party crates may provide Serialize implementations for types that they expose. For example the linked-hash-map crate provides a LinkedHashMap<K, V> type that is serializable by Serde because the crate provides an implementation of Serialize for it.

Required Methods§

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer.

See the Implementing Serialize section of the manual for more information about how to implement this method.

use serde::ser::{Serialize, SerializeStruct, Serializer};

struct Person {
    name: String,
    age: u8,
    phones: Vec<String>,
}

// This is what #[derive(Serialize)] would generate.
impl Serialize for Person {
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        let mut s = serializer.serialize_struct("Person", 3)?;
        s.serialize_field("name", &self.name)?;
        s.serialize_field("age", &self.age)?;
        s.serialize_field("phones", &self.phones)?;
        s.end()
    }
}

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types§

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impl Serialize for IpAddr

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for SocketAddr

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for bool

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for char

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for f32

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for f64

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for i8

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for i16

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for i32

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for i64

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for i128

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for isize

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for str

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for u8

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for u16

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for u32

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for u64

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for u128

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for ()

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for usize

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for CString

Available on crate features std or alloc only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for String

Available on crate features std or alloc only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for CStr

Available on crate feature std only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for Ipv4Addr

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for Ipv6Addr

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for SocketAddrV4

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for SocketAddrV6

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for AtomicBool

Available on crate feature std and target_has_atomic="8" only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for AtomicI8

Available on crate feature std and target_has_atomic="8" only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for AtomicI16

Available on crate feature std and target_has_atomic="16" only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for AtomicI32

Available on crate feature std and target_has_atomic="32" only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for AtomicI64

Available on crate feature std and target_has_atomic="64" only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for AtomicIsize

Available on crate feature std and target_has_atomic="ptr" only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for AtomicU8

Available on crate feature std and target_has_atomic="8" only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for AtomicU16

Available on crate feature std and target_has_atomic="16" only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for AtomicU32

Available on crate feature std and target_has_atomic="32" only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for AtomicU64

Available on crate feature std and target_has_atomic="64" only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for AtomicUsize

Available on crate feature std and target_has_atomic="ptr" only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for Duration

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for OsStr

Available on crate feature std and (Unix or Windows) only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for OsString

Available on crate feature std and (Unix or Windows) only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for Path

Available on crate feature std only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for PathBuf

Available on crate feature std only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for SystemTime

Available on crate feature std only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for NonZeroI8

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for NonZeroI16

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for NonZeroI32

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for NonZeroI64

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for NonZeroI128

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for NonZeroIsize

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for NonZeroU8

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for NonZeroU16

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for NonZeroU32

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for NonZeroU64

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for NonZeroU128

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl Serialize for NonZeroUsize

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<'a> Serialize for Arguments<'a>

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<'a, T> Serialize for Cow<'a, T>
where T: ?Sized + Serialize + ToOwned,

Available on crate features std or alloc only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<'a, T> Serialize for &'a T
where T: ?Sized + Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<'a, T> Serialize for &'a mut T
where T: ?Sized + Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<Idx> Serialize for Range<Idx>
where Idx: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<Idx> Serialize for RangeFrom<Idx>
where Idx: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<Idx> Serialize for RangeInclusive<Idx>
where Idx: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<Idx> Serialize for RangeTo<Idx>
where Idx: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<K, V> Serialize for BTreeMap<K, V>
where K: Serialize, V: Serialize,

Available on crate features std or alloc only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<K, V, H> Serialize for HashMap<K, V, H>
where K: Serialize, V: Serialize,

Available on crate feature std only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for Bound<T>
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for Option<T>
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 0]

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 1]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 2]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 3]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 4]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 5]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 6]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 7]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 8]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 9]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 10]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 11]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 12]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 13]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 14]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 15]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 16]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 17]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 18]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 19]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 20]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 21]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 22]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 23]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 24]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 25]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 26]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 27]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 28]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 29]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 30]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 31]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T; 32]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for [T]
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for (T₁, T₂, …, Tₙ)
where T: Serialize,

This trait is implemented for tuples up to 16 items long.

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for Box<T>
where T: ?Sized + Serialize,

Available on crate features std or alloc only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for BinaryHeap<T>
where T: Serialize,

Available on crate features std or alloc only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for BTreeSet<T>
where T: Serialize,

Available on crate features std or alloc only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for LinkedList<T>
where T: Serialize,

Available on crate features std or alloc only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for VecDeque<T>
where T: Serialize,

Available on crate features std or alloc only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for Vec<T>
where T: Serialize,

Available on crate features std or alloc only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for Cell<T>
where T: Serialize + Copy,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for RefCell<T>
where T: ?Sized + Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for Reverse<T>
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for PhantomData<T>
where T: ?Sized,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for Saturating<T>
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for Wrapping<T>
where T: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for Mutex<T>
where T: ?Sized + Serialize,

Available on crate feature std only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T> Serialize for RwLock<T>
where T: ?Sized + Serialize,

Available on crate feature std only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T, E> Serialize for Result<T, E>
where T: Serialize, E: Serialize,

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

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impl<T, H> Serialize for HashSet<T, H>
where T: Serialize,

Available on crate feature std only.
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Implementors§