Enum ValueOption 

pub enum ValueOption {
    Required,
    Filldown,
    Fillup,
    Key,
    List,
}

Available options for Value definitions.

Variants

Required

Record is skipped if this value is empty when recording.

Filldown

Value persists across Clear operations (retained until ClearAll).

Fillup

On assignment, backfill this value to previous records that have it empty.

Key

Marks this value as part of the record’s key (metadata only).

List

Value accumulates as a list instead of being replaced.

Implementations

impl ValueOption

pub fn parse(s: &str) -> Option<Self>

Parse option name from string.

pub fn all_names() -> &'static [&'static str]

Get all valid option names.

Trait Implementations

impl Clone for ValueOption

fn clone(&self) -> ValueOption

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ValueOption

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

Formats the value using the given formatter.

impl Hash for ValueOption

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ValueOption

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for ValueOption

impl Eq for ValueOption

impl StructuralPartialEq for ValueOption