# Struct syn::Generics [−] [src]

    pub struct Generics {
        pub lifetimes: Vec<LifetimeDef>,
        pub ty_params: Vec<TyParam>,
        pub where_clause: WhereClause,
    }

Represents lifetimes and type parameters attached to a declaration of a function, enum, trait, etc.

## Fields

`lifetimes: Vec<LifetimeDef>` `ty_params: Vec<TyParam>` `where_clause: WhereClause`

## Methods

### `impl Generics`
[src]

#### `pub fn split_for_impl(&self) -> (ImplGenerics, TyGenerics, &WhereClause)`
[src]

Split a type's generics into the pieces required for impl'ing a trait for that type.

    let (impl_generics, ty_generics, where_clause) = generics.split_for_impl();
    quote! {
        impl #impl_generics MyTrait for #name #ty_generics #where_clause {
            // ...
        }
    }

## Trait Implementations

### `impl ToTokens for Generics`
[src]

#### `fn to_tokens(&self, tokens: &mut Tokens)`
[src]

Write `self` to the given `Tokens`. Read more

### `impl Debug for Generics`
[src]

#### `fn fmt(&self, __arg_0: &mut Formatter) -> Result`
[src]

Formats the value using the given formatter. Read more

### `impl Clone for Generics`
[src]

#### `fn clone(&self) -> Generics`
[src]

Returns a copy of the value. Read more

#### `fn clone_from(&mut self, source: &Self)`
1.0.0
[src]

Performs copy-assignment from `source`. Read more

### `impl Eq for Generics`
[src]

### `impl PartialEq for Generics`
[src]

#### `fn eq(&self, __arg_0: &Generics) -> bool`
[src]

This method tests for `self` and `other` values to be equal, and is used by `==`. Read more

#### `fn ne(&self, __arg_0: &Generics) -> bool`
[src]

This method tests for `!=`.

### `impl Default for Generics`
[src]

#### `fn default() -> Generics`
[src]

Returns the "default value" for a type. Read more

### `impl Hash for Generics`
[src]

#### `fn hash<__H: Hasher>(&self, __arg_0: &mut __H)`
[src]

Feeds this value into the given [`Hasher`]. Read more

#### `fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,`
1.3.0
[src]

Feeds a slice of this type into the given [`Hasher`]. Read more

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