Struct NonFiniteFloat 

pub struct NonFiniteFloat { /* private fields */ }

A float JSON cannot represent: an infinity or a NaN.

JSON’s grammar has no spelling for either, and serde_json refuses to build a Number from one. TOML’s grammar does — inf, -inf, nan are literals — so a .toml input can carry one straight into a -f json emission, where it used to be silently replaced by 0.

The lone JSON impossibility, which is why to_json returns this type directly where to_toml returns the TomlError enum. A second one would be the moment to introduce the wrapper, not before: an enum with one variant buys a consumer nothing and costs it a match.

Carries paths and the value’s TOML spelling, and stops short of a trailing newline like its TOML-side siblings.

Trait Implementations

impl Debug for NonFiniteFloat

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

Formats the value using the given formatter.

impl Display for NonFiniteFloat

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

Formats the value using the given formatter.

impl Error for NonFiniteFloat

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.