Struct ProvenanceStep 

pub struct ProvenanceStep {
    pub node: NodeId,
    pub object: &'static str,
    pub operation: &'static str,
    pub value: String,
}

One observation in a provenance chain: which node, object, and operation produced a value. 来源链中的一条观测：记录哪个节点、对象与操作产出了某个取值。

Fields

node: NodeId

Node that performed the operation. 执行该操作的节点。

object: &'static str

Object the operation was performed on. 该操作所作用的对象。

operation: &'static str

Name of the operation that produced the value. 产出该取值的操作名称。

value: String

The observed value rendered as text. 以文本形式记录的观测取值。

Trait Implementations

impl Clone for ProvenanceStep

fn clone(&self) -> ProvenanceStep

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ProvenanceStep

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

Formats the value using the given formatter.

impl Eq for ProvenanceStep

impl PartialEq for ProvenanceStep

fn eq(&self, other: &ProvenanceStep) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ProvenanceStep