Struct MetadataBuilder

pub struct MetadataBuilder<'a> { /* private fields */ }

Builder for Metadata.

Typically should only be used by log library creators or for testing and “shim loggers”. The MetadataBuilder can set the different parameters of a Metadata object, and returns the created object when build is called.

Example

let target = "myApp";
use log::{Level, MetadataBuilder};
let metadata = MetadataBuilder::new()
                    .level(Level::Debug)
                    .target(target)
                    .build();

Implementations

impl<'a> MetadataBuilder<'a>

pub fn new() -> MetadataBuilder<'a>

Construct a new MetadataBuilder.

The default options are:

• level: Level::Info
• target: ""

pub fn level(&mut self, arg: Level) -> &mut MetadataBuilder<'a>

Setter for level.

pub fn target(&mut self, target: &'a str) -> &mut MetadataBuilder<'a>

Setter for target.

pub fn build(&self) -> Metadata<'a>

Returns a Metadata object.

Trait Implementations

impl<'a> Debug for MetadataBuilder<'a>

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

Formats the value using the given formatter.

impl<'a> Default for MetadataBuilder<'a>

fn default() -> Self

Returns the “default value” for a type.

impl<'a> Hash for MetadataBuilder<'a>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<'a> Ord for MetadataBuilder<'a>

fn cmp(&self, other: &MetadataBuilder<'a>) -> 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<'a> PartialEq for MetadataBuilder<'a>

fn eq(&self, other: &MetadataBuilder<'a>) -> 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<'a> PartialOrd for MetadataBuilder<'a>

fn partial_cmp(&self, other: &MetadataBuilder<'a>) -> 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<'a> Eq for MetadataBuilder<'a>

impl<'a> StructuralPartialEq for MetadataBuilder<'a>

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: 24 bytes