Trait AltStringData 

pub trait AltStringData: AltrepLen {
    // Required method
    fn elt(&self, i: usize) -> Option<&str>;

    // Provided methods
    fn is_sorted(&self) -> Option<Sortedness> { ... }
    fn no_na(&self) -> Option<bool> { ... }
}

Trait for types that can back an ALTSTRING vector.

Note: elt returns a &str which will be converted to CHARSXP.

Required Methods

fn elt(&self, i: usize) -> Option<&str>

Get the string element at index i.

Return None for NA values.

Provided Methods

fn is_sorted(&self) -> Option<Sortedness>

Optional: sortedness hint.

fn no_na(&self) -> Option<bool>

Optional: does this vector contain any NA values?

Implementations on Foreign Types

impl AltStringData for &[&str]

fn elt(&self, i: usize) -> Option<&str>

impl AltStringData for &[String]

fn elt(&self, i: usize) -> Option<&str>

impl AltStringData for Box<[String]>

fn elt(&self, i: usize) -> Option<&str>

fn no_na(&self) -> Option<bool>

impl AltStringData for Vec<Cow<'static, str>>

fn elt(&self, i: usize) -> Option<&str>

fn no_na(&self) -> Option<bool>

impl AltStringData for Vec<Option<Cow<'static, str>>>

fn elt(&self, i: usize) -> Option<&str>

fn no_na(&self) -> Option<bool>

impl AltStringData for Vec<Option<String>>

fn elt(&self, i: usize) -> Option<&str>

fn no_na(&self) -> Option<bool>

impl AltStringData for Vec<String>

fn elt(&self, i: usize) -> Option<&str>

fn no_na(&self) -> Option<bool>

impl<const N: usize> AltStringData for [String; N]

fn elt(&self, i: usize) -> Option<&str>

Implementors

impl<I> AltStringData for IterStringData<I>

where I: Iterator<Item = String>,