Struct FieldMask 

pub struct FieldMask { /* private fields */ }

As tree structure that repersents a set of nested fields.

This is based on the FieldMaskTree that is found in the C++ & Java protobuf libraries. It can be used for conditionally clearing or updating crate::Instance. A tree is used to simplify & speed up filtering fields A field mask contains a series of paths to attributes such as ["foo.a", "foo.b", "bar"]. Internally that would be repersented as a tree like below:

    foo    bar
   /   \
  a     b

Implementations

impl FieldMask

pub fn new<'a, I: IntoIterator<Item = &'a str>>(iter: I) -> FieldMask

pub fn child(&self, path: &SmolStr) -> Option<&FieldMask>

Returns a field mask for a specific field.

Trait Implementations

impl Default for FieldMask

fn default() -> FieldMask

Returns the “default value” for a type.