Trait MappingView 

pub trait MappingView {
    // Required methods
    fn get(&self, key: &dyn AsYaml) -> Option<YamlNode>;
    fn iter<'a>(&'a self) -> Box<dyn Iterator<Item = (YamlNode, YamlNode)> + 'a>;

    // Provided methods
    fn contains_key(&self, key: &dyn AsYaml) -> bool { ... }
    fn len(&self) -> usize { ... }
    fn is_empty(&self) -> bool { ... }
    fn keys<'a>(&'a self) -> Box<dyn Iterator<Item = YamlNode> + 'a> { ... }
    fn values<'a>(&'a self) -> Box<dyn Iterator<Item = YamlNode> + 'a> { ... }
}

A read-only “view” of a YAML mapping, implemented by both the CST Mapping and the alias/merge-key–resolving MergedMapping.

See the module docs for an overview and example.

Required Methods

fn get(&self, key: &dyn AsYaml) -> Option<YamlNode>

Look up the value associated with key.

Key matching is semantic (quoting style is ignored), so "foo", 'foo', and foo all match the scalar foo.

fn iter<'a>(&'a self) -> Box<dyn Iterator<Item = (YamlNode, YamlNode)> + 'a>

Iterate over (key, value) pairs.

Provided Methods

fn contains_key(&self, key: &dyn AsYaml) -> bool

Returns true if get would return Some for key.

fn len(&self) -> usize

Number of entries visible through this view.

fn is_empty(&self) -> bool

Returns true if the view has no entries.

fn keys<'a>(&'a self) -> Box<dyn Iterator<Item = YamlNode> + 'a>

Iterate over the keys.

fn values<'a>(&'a self) -> Box<dyn Iterator<Item = YamlNode> + 'a>

Iterate over the values.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl MappingView for Mapping

impl MappingView for MergedMapping<'_>