Method len

datafusion/common/src/metadata.rs:307–309

Returns the number of key-value pairs in the metadata.

(&self)

    /// Returns the number of key-value pairs in the metadata.
    pub fn len(&self) -> usize {
        self.inner.len()
    }

    /// Convert this `FieldMetadata` into a `HashMap<String, String>`
    pub fn to_hashmap(&self) -> std::collections::HashMap<String, String> {