Function soleValue

soleValue(this: void, set: ValueSet<Value[]> | undefined): Value | undefined

soleValue<
    T extends
        | symbol
        | "string"
        | "number"
        | "set"
        | "vector"
        | "interval"
        | "logical"
        | "missing"
        | "function-definition"
        | "null",
>(
    this: void,
    set: ValueSet<Value[]> | undefined,
    type: T,
):
    | Extract<{ type: symbol }, { type: T }>
    | Extract<{ type: symbol }, { type: T }>
    | Extract<ValueInterval<ValueNumber<Lift<(...)>>>, { type: T }>
    | Extract<ValueVector<Lift<(...)[]>, Value>, { type: T }>
    | Extract<ValueSet<Lift<(...)[]>>, { type: T }>
    | Extract<ValueNumber<Lift<RNumberValue>>, { type: T }>
    | Extract<ValueString<Lift<RStringValue>>, { type: T }>
    | Extract<ValueLogical, { type: T }>
    | Extract<ValueMissing, { type: T }>
    | Extract<ValueFunctionDefinition, { type: T }>
    | Extract<ValueNull, { type: T }>
    | undefined