Enum Level 

pub enum Level {
    Debug = 0,
    Info = 1,
    Warning = 2,
    Error = 3,
    Critical = 4,
}

Severity level of a log message, ordered from least to most severe.

The numeric values are stable and used for cheap comparisons and for storing the level in an atomic (as u8 / Level::from_u8).

Variants

Debug = 0

Fine-grained detail for diagnosing problems.

Info = 1

Routine confirmation that things are working.

Warning = 2

Something unexpected, or a problem that may occur soon.

Error = 3

A failure that prevented some operation from completing.

Critical = 4

A severe failure; the program may be unable to continue.

Implementations

impl Level

pub fn to_str(&self) -> &str

The uppercase name of the level, e.g. Level::Info -> "INFO".

pub fn to_u8(self) -> u8

The level’s stable numeric value.

pub fn from_u8(u8: u8) -> Level

Inverse of Level::to_u8. Panics on a value outside 0..=4.

Trait Implementations

impl Clone for Level

fn clone(&self) -> Level

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Level

impl Debug for Level

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

Formats the value using the given formatter.

impl Eq for Level

impl FromStr for Level

fn from_str(s: &str) -> Result<Level, Self::Err>

Parses a level from its uppercase name (e.g. "INFO"), erroring on an unknown string. Enables "INFO".parse::<Level>().

type Err = ParseLevelError

The associated error which can be returned from parsing.

impl Ord for Level

fn cmp(&self, other: &Level) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Level

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Level

fn partial_cmp(&self, other: &Level) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for Level