Struct Empty 

pub struct Empty;

A variable that was never given a value.

Handlebars treats an undefined variable as empty, and so does this: Empty writes nothing when displayed, and stands in for a list with no items. Generated code uses it; you should never need to name it.

Trait Implementations

impl<T> AsRef<[T]> for Empty

fn as_ref(&self) -> &[T]

Converts this type into a shared reference of the (usually inferred) input type.

impl Display for Empty

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

Formats the value using the given formatter.

impl Length for Empty

A variable that was never set is absent, and absent has no count — {{ rows.length }} writes nothing, rather than 0, exactly as it does for an undefined value in handlebars.js.

type Count = Empty

What the count renders as: a number, or nothing at all when the list was never set.

fn length(&self) -> Empty

How many items this holds.

impl Truthy for Empty

A variable that was never set is absent, and absent is falsy.

fn is_truthy(&self) -> bool

Whether {{#if}} should render its block for this value.