Method with_values_field

arrow-array/src/builder/map_builder.rs:135–140

Override the field passed to [`MapBuilder::new`] By default, a nullable field is created with the name `values` Note: [`Self::finish`] and [`Self::finish_cloned`] will panic if the field's data type does not match that of `V`

(self, field: impl Into<FieldRef>)

    /// Note: [`Self::finish`] and [`Self::finish_cloned`] will panic if the
    /// field's data type does not match that of `V`
    pub fn with_values_field(self, field: impl Into<FieldRef>) -> Self {
        Self {
            value_field: Some(field.into()),
            ..self
        }
    }

    /// Returns the key array builder of the map
    pub fn keys(&mut self) -> &mut K {