Struct Answers 

pub struct Answers { /* private fields */ }

The answers a template is rendered from, by variable name.

Parsed from an answers document (Answers::from_yaml) or built in code. Nothing here knows a template’s variables: an answer naming no declared variable, or of the wrong type, is refused when the answers meet the template, by super::Template::render.

Implementations

impl Answers

pub fn new() -> Self

Answers to nothing: rendered from these, every default is taken and every required variable is refused.

pub fn from_yaml(text: &str) -> Result<Self, TemplateError>

Read an answers document: a top-level YAML mapping from variable name to value.

An empty document is no answers.

Errors

TemplateError::MalformedAnswers for a document that is not YAML, or whose top level is not a mapping with string keys.

pub fn set(&mut self, name: impl Into<String>, value: Value) -> &mut Self

Answer name with value.

pub fn set_text( &mut self, name: impl Into<String>, text: impl Into<String>, ) -> &mut Self

Answer name with text as a command line gives it: taken literally for a string or text variable, and read as YAML for any other type.

pub fn unset(&mut self, name: impl Into<String>) -> &mut Self

Leave name unanswered — and, over earlier answers, take away the one they gave.

pub fn overlay(&self, later: &Self) -> Self

These answers with later laid over them: a name later answers takes its answer, a name later unsets is unanswered, and every other name keeps what it had.

pub fn names(&self) -> impl Iterator<Item = &str>

Every name answered, in name order — an unset name is not answered.

Trait Implementations

impl Clone for Answers

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Answers

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

Formats the value using the given formatter.

impl Default for Answers

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for Answers

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Answers