Struct InferredSchema 

pub struct InferredSchema {
    pub keys: Vec<InferredKey>,
    pub key_states: Vec<KeyState>,
    pub total_records: usize,
}

Return type of the inference pass: each key’s chosen sigil plus whether it is optional (absent in ≥1 record).

During pass 1, key_states and total_records are populated alongside keys. After infer::finalize, key_states may be dropped.

Fields

keys: Vec<InferredKey>

key_states: Vec<KeyState>

Parallel to keys — accumulates raw observations during pass 1.

total_records: usize

Total records seen during pass 1 (used to detect optional keys).

Trait Implementations

impl Debug for InferredSchema

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

Formats the value using the given formatter.

impl Default for InferredSchema

fn default() -> InferredSchema

Returns the “default value” for a type.