Trait AltString 

pub trait AltString: AltVec {
    const HAS_SET_ELT: bool = false;
    const HAS_IS_SORTED: bool = false;
    const HAS_NO_NA: bool = false;

    // Required method
    fn elt(x: SEXP, i: R_xlen_t) -> SEXP;

    // Provided methods
    fn set_elt(_x: SEXP, _i: R_xlen_t, _v: SEXP) { ... }
    fn is_sorted(_x: SEXP) -> i32 { ... }
    fn no_na(_x: SEXP) -> i32 { ... }
}

String vector methods.

REQUIRED: elt must be implemented (no default). R will error with “No Elt method found” if you don’t provide it.

Provided Associated Constants

const HAS_SET_ELT: bool = false

Set to true to register set_elt.

const HAS_IS_SORTED: bool = false

Set to true to register is_sorted.

const HAS_NO_NA: bool = false

Set to true to register no_na.

Required Methods

fn elt(x: SEXP, i: R_xlen_t) -> SEXP

Get string element at index. Returns CHARSXP. This is REQUIRED for ALTSTRING - there is no default.

Provided Methods

fn set_elt(_x: SEXP, _i: R_xlen_t, _v: SEXP)

Set element (for mutable strings).

fn is_sorted(_x: SEXP) -> i32

Sortedness hint.

fn no_na(_x: SEXP) -> i32

NA-free hint.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl AltString for &'static [&'static str]

const HAS_NO_NA: bool = true

fn elt(x: SEXP, i: R_xlen_t) -> SEXP

fn no_na(x: SEXP) -> i32

impl AltString for &'static [String]

const HAS_NO_NA: bool = true

fn elt(x: SEXP, i: R_xlen_t) -> SEXP

fn no_na(x: SEXP) -> i32

impl AltString for Box<[String]>

const HAS_IS_SORTED: bool = true

const HAS_NO_NA: bool = true

fn elt(x: SEXP, i: R_xlen_t) -> SEXP

fn is_sorted(x: SEXP) -> i32

fn no_na(x: SEXP) -> i32

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

const HAS_IS_SORTED: bool = true

const HAS_NO_NA: bool = true

fn elt(x: SEXP, i: R_xlen_t) -> SEXP

fn is_sorted(x: SEXP) -> i32

fn no_na(x: SEXP) -> i32

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

const HAS_IS_SORTED: bool = true

const HAS_NO_NA: bool = true

fn elt(x: SEXP, i: R_xlen_t) -> SEXP

fn is_sorted(x: SEXP) -> i32

fn no_na(x: SEXP) -> i32

impl AltString for Vec<Option<String>>

const HAS_IS_SORTED: bool = true

const HAS_NO_NA: bool = true

fn elt(x: SEXP, i: R_xlen_t) -> SEXP

fn is_sorted(x: SEXP) -> i32

fn no_na(x: SEXP) -> i32

impl AltString for Vec<String>

const HAS_IS_SORTED: bool = true

const HAS_NO_NA: bool = true

fn elt(x: SEXP, i: R_xlen_t) -> SEXP

fn is_sorted(x: SEXP) -> i32

fn no_na(x: SEXP) -> i32

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

fn elt(x: SEXP, i: R_xlen_t) -> SEXP

Implementors