Struct Let

pub struct Let<'a> { /* private fields */ }

The Let function binds one or more variables to a single value or expression.

When multiple variables are defined, the evaluation is from left to right. Variables which have previously been defined may be used to define future variables. Variables are lexically scoped to the expression passed via the in parameter. The value of a variable can be referenced with Var(varname) syntax.

Read the docs.

Implementations

impl<'a> Let<'a>

pub fn bindings<B, E>(bindings: B, in_expr: E) -> Self

where B: IntoIterator<Item = Binding<'a>>, E: Into<Expr<'a>>,

Set bindings to be available in the given Expr.

Trait Implementations

impl<'a> Clone for Let<'a>

fn clone(&self) -> Let<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for Let<'a>

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

Formats the value using the given formatter.

impl<'a> From<Let<'a>> for Query<'a>

fn from(q: Let<'a>) -> Self

Converts to this type from the input type.

impl<'a> Serialize for Let<'a>

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

where __S: Serializer,

Serialize this value into the given Serde serializer.