Struct ResolvedColumn 

pub(crate) struct ResolvedColumn {
    pub(crate) col_name: Ident,
    pub(crate) ty: Type,
    pub(crate) present_in: Vec<usize>,
    pub(crate) string_coerced: bool,
    pub(crate) is_factor: bool,
}

A resolved column in the unified schema across all enum variants.

Tracks the column name, element type, which variants contribute to this column, and whether the type was coerced to String due to cross-variant type conflicts (when #[dataframe(conflicts = "string")] is active).

Fields

col_name: Ident

Column name in the companion struct / data frame.

ty: Type

Element type (used as Vec<Option<#ty>>). When string_coerced is true, this is always String.

present_in: Vec<usize>

Indices of variants that contain this field.

string_coerced: bool

Whether this column was coerced to String due to type conflicts. When true, values are converted via ToString::to_string() at push time.

is_factor: bool

Whether this column should be emitted as an R factor (via as_factor attribute). When true, into_data_frame wraps the Vec<Option<T>> in FactorOptionVec<T> before calling IntoR::into_sexp, using the UnitEnumFactor blanket impl.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 384 bytes