# [−] [src] Struct log::RecordBuilder

    pub struct RecordBuilder<'a> { /* fields omitted */ }

Builder for `Record`.

Typically should only be used by log library creators or for testing and "shim loggers". The `RecordBuilder` can set the different parameters of `Record` object, and returns the created object when `build` is called.

# Examples

ⓘThis code runs with edition 2018

    use log::{Level, Record};

    let record = Record::builder()
                    .args(format_args!("Error!"))
                    .level(Level::Error)
                    .target("myApp")
                    .file(Some("server.rs"))
                    .line(Some(144))
                    .module_path(Some("server"))
                    .build();

Alternatively, use `MetadataBuilder`:

ⓘThis code runs with edition 2018

    use log::{Record, Level, MetadataBuilder};

    let error_metadata = MetadataBuilder::new()
                            .target("myApp")
                            .level(Level::Error)
                            .build();

    let record = Record::builder()
                    .metadata(error_metadata)
                    .args(format_args!("Error!"))
                    .line(Some(433))
                    .file(Some("app.rs"))
                    .module_path(Some("server"))
                    .build();

## Implementations

### `impl<'a> RecordBuilder<'a>` [src]

#### `pub fn new() -> RecordBuilder<'a>` [src]

Construct new `RecordBuilder`.

The default options are:

- `args`: `format_args!("")`
- `metadata`: `Metadata::builder().build()`
- `module_path`: `None`
- `file`: `None`
- `line`: `None`

#### `pub fn args(&mut self, args: Arguments<'a>) -> &mut RecordBuilder<'a>` [src]

Set `args`.

#### `pub fn metadata(&mut self, metadata: Metadata<'a>) -> &mut RecordBuilder<'a>` [src]

Set `metadata`. Construct a `Metadata` object with `MetadataBuilder`.

#### `pub fn level(&mut self, level: Level) -> &mut RecordBuilder<'a>` [src]

Set `Metadata::level`.

#### `pub fn target(&mut self, target: &'a str) -> &mut RecordBuilder<'a>` [src]

Set `Metadata::target`

#### `pub fn module_path(&mut self, path: Option<&'a str>) -> &mut RecordBuilder<'a>` [src]

Set `module_path`

#### `pub fn module_path_static(
&mut self,
path: Option<&'static str>
) -> &mut RecordBuilder<'a>` [src]

Set `module_path` to a `'static` string

#### `pub fn file(&mut self, file: Option<&'a str>) -> &mut RecordBuilder<'a>` [src]

Set `file`

#### `pub fn file_static(
&mut self,
file: Option<&'static str>
) -> &mut RecordBuilder<'a>` [src]

Set `file` to a `'static` string.

#### `pub fn line(&mut self, line: Option<u32>) -> &mut RecordBuilder<'a>` [src]

Set `line`

#### `pub fn build(&self) -> Record<'a>` [src]

Invoke the builder and return a `Record`

## Trait Implementations

### `impl<'a> Debug for RecordBuilder<'a>` [src]

#### `fn fmt(&self, f: &mut Formatter<'_>) -> Result` [src]

Formats the value using the given formatter. Read more

## Auto Trait Implementations

### `impl<'a> !Send for RecordBuilder<'a>`

### `impl<'a> !Sync for RecordBuilder<'a>`

### `impl<'a> Unpin for RecordBuilder<'a>`

## Blanket Implementations

### `impl<T> Any for T where
T: 'static + ?Sized,` [src]

#### `pub fn type_id(&self) -> TypeId` [src]

Gets the `TypeId` of `self`. Read more

### `impl<T> Borrow<T> for T where
T: ?Sized,` [src]

#### `pub fn borrow(&self) -> &T` [src]

Immutably borrows from an owned value. Read more

### `impl<T> BorrowMut<T> for T where
T: ?Sized,` [src]

#### `pub fn borrow_mut(&mut self) -> &mut T` [src]

Mutably borrows from an owned value. Read more

### `impl<T> From<T> for T` [src]

#### `pub fn from(t: T) -> T` [src]

Performs the conversion.

### `impl<T, U> Into<U> for T where
U: From<T>,` [src]

#### `pub fn into(self) -> U` [src]

Performs the conversion.

### `impl<T, U> TryFrom<U> for T where
U: Into<T>,` [src]

#### `type Error = Infallible`

The type returned in the event of a conversion error.

#### `pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>` [src]

Performs the conversion.

### `impl<T, U> TryInto<U> for T where
U: TryFrom<T>,` [src]

#### `type Error = <U as TryFrom<T>>::Error`

The type returned in the event of a conversion error.

#### `pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>` [src]

Performs the conversion.