Struct AsDataFrame 

pub struct AsDataFrame<T: IntoDataFrame>(pub T);

Wrap a value and convert it to an R data.frame via IntoDataFrame when returned.

Use this at a call site to force a single return value into a data.frame without making that the type’s default representation (for the always-a-data.frame default, use #[derive(PreferDataFrame)] / #[miniextendr(dataframe)]). The inner T is typically a Vec<Row> where Row derives DataFrameRow.

A failed conversion (DataFrameError) surfaces in R as an error condition.

Example

#[derive(DataFrameRow)]
struct Point { x: f64, y: f64 }

#[miniextendr]
fn grid() -> AsDataFrame<Vec<Point>> {
    AsDataFrame(vec![Point { x: 0.0, y: 0.0 }, Point { x: 1.0, y: 1.0 }])
}
// In R: grid() returns a data.frame with columns x, y

Tuple Fields

0: T

Trait Implementations

impl<T: Clone + IntoDataFrame> Clone for AsDataFrame<T>

fn clone(&self) -> AsDataFrame<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug + IntoDataFrame> Debug for AsDataFrame<T>

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

Formats the value using the given formatter.

impl<T: IntoDataFrame> From<T> for AsDataFrame<T>

fn from(value: T) -> Self

Converts to this type from the input type.

impl<T: IntoDataFrame> IntoR for AsDataFrame<T>

type Error = DataFrameError

The error type for fallible conversions.

fn try_into_sexp(self) -> Result<SEXP, Self::Error>

Try to convert this value to an R SEXP.

unsafe fn try_into_sexp_unchecked(self) -> Result<SEXP, Self::Error>

Try to convert to SEXP without thread safety checks.

fn into_sexp(self) -> SEXP

where Self: Sized,

Convert this value to an R SEXP, panicking on error.

unsafe fn into_sexp_unchecked(self) -> SEXP

where Self: Sized,

Convert to SEXP without thread safety checks, panicking on error.

Layout

Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.