Logger

narlog

Struct Logger 

Source 
pub struct Logger { /* private fields */ }

Implementations§

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impl Logger

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pub fn new() -> Self

Creates a logger instance.

use narlog::prelude::*;
let logger = Logger::new();
Examples found in repository?
examples/with_timestamp.rs (line 4)
3fn main() {
4    let logger_time = Logger::new().with_timestamp(TimestampType::Time);
5    let logger_datetime = Logger::new().with_timestamp(TimestampType::DateTime);
6    let logger_very_detailed = Logger::new().with_timestamp(TimestampType::VeryDetailed);
7    logger_time.info("consectetur adipiscing elit");
8    logger_datetime.warn("Ut enim ad minim veniam");
9    logger_very_detailed.error("quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat", None);
10}
More examples
Hide additional examples
examples/basic_logging.rs (line 6)
5fn main() {
6    let logger = Logger::new();
7    let error = io::Error::new(ErrorKind::Other, "velit esse cillum dolore eu fugiat nulla pariatur");
8    logger.trace("Lorem ipsum dolor sit amet");
9    logger.info("consectetur adipiscing elit");
10    logger.debug("sed do eiusmod tempor incididunt ut labore et dolore magna aliqua");
11    logger.warn("Ut enim ad minim veniam");
12    logger.error("quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat", Some(&error));
13    logger.fatal("Duis aute irure dolor in reprehenderit in voluptate", Some(&error));
14}
examples/with_prefix.rs (line 6)
5fn main() {
6    let logger = Logger::new().with_prefix("🦀");
7    let error = io::Error::new(ErrorKind::Other, "velit esse cillum dolore eu fugiat nulla pariatur");
8    logger.trace("Lorem ipsum dolor sit amet");
9    logger.info("consectetur adipiscing elit");
10    logger.debug("sed do eiusmod tempor incididunt ut labore et dolore magna aliqua");
11    logger.warn("Ut enim ad minim veniam");
12    logger.error("quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat", Some(&error));
13    logger.fatal("Duis aute irure dolor in reprehenderit in voluptate", Some(&error));
14}
Source

pub fn with_prefix(self, prefix: impl Into<String>) -> Self

Sets a specified prefix.

use narlog::prelude::*;
let logger = Logger::new().with_prefix("👍");
Examples found in repository?
examples/with_prefix.rs (line 6)
5fn main() {
6    let logger = Logger::new().with_prefix("🦀");
7    let error = io::Error::new(ErrorKind::Other, "velit esse cillum dolore eu fugiat nulla pariatur");
8    logger.trace("Lorem ipsum dolor sit amet");
9    logger.info("consectetur adipiscing elit");
10    logger.debug("sed do eiusmod tempor incididunt ut labore et dolore magna aliqua");
11    logger.warn("Ut enim ad minim veniam");
12    logger.error("quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat", Some(&error));
13    logger.fatal("Duis aute irure dolor in reprehenderit in voluptate", Some(&error));
14}
Source

pub fn with_timestamp(self, timestamp_type: TimestampType) -> Self

Sets a timestamp.

use narlog::prelude::*;
let logger = Logger::new().with_timestamp(TimestampType::Time);
Examples found in repository?
examples/with_timestamp.rs (line 4)
3fn main() {
4    let logger_time = Logger::new().with_timestamp(TimestampType::Time);
5    let logger_datetime = Logger::new().with_timestamp(TimestampType::DateTime);
6    let logger_very_detailed = Logger::new().with_timestamp(TimestampType::VeryDetailed);
7    logger_time.info("consectetur adipiscing elit");
8    logger_datetime.warn("Ut enim ad minim veniam");
9    logger_very_detailed.error("quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat", None);
10}
Source

pub fn log(&self, level: LogLevel, msg: impl Into<String>)

Logs a message at the specified level.

use narlog::prelude::*;

let logger = Logger::new();
 
logger.log(LogLevel::Info, "Information");
logger.log(LogLevel::Warn, "Warning");
Source

pub fn log_with_error( &self, level: LogLevel, msg: impl Into<String>, err: Option<&dyn Error>, )

Logs a message at the specified level with an optional error.

use narlog::prelude::*;
use std::io::{self, ErrorKind};

let logger = Logger::new();
let err = io::Error::new(ErrorKind::Other, "extra details");

logger.log_with_error(LogLevel::Error, "Something went wrong", Some(&err));
logger.log_with_error(LogLevel::Fatal, "Catastrophic failure", None);
Source

pub fn trace(&self, msg: impl Into<String>)

Logs a message at the trace level.

use narlog::prelude::*;
let logger = Logger::new();
logger.trace("Lorem ipsum dolor sit amet");
Examples found in repository?
examples/basic_logging.rs (line 8)
5fn main() {
6    let logger = Logger::new();
7    let error = io::Error::new(ErrorKind::Other, "velit esse cillum dolore eu fugiat nulla pariatur");
8    logger.trace("Lorem ipsum dolor sit amet");
9    logger.info("consectetur adipiscing elit");
10    logger.debug("sed do eiusmod tempor incididunt ut labore et dolore magna aliqua");
11    logger.warn("Ut enim ad minim veniam");
12    logger.error("quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat", Some(&error));
13    logger.fatal("Duis aute irure dolor in reprehenderit in voluptate", Some(&error));
14}
More examples
Hide additional examples
examples/with_prefix.rs (line 8)
5fn main() {
6    let logger = Logger::new().with_prefix("🦀");
7    let error = io::Error::new(ErrorKind::Other, "velit esse cillum dolore eu fugiat nulla pariatur");
8    logger.trace("Lorem ipsum dolor sit amet");
9    logger.info("consectetur adipiscing elit");
10    logger.debug("sed do eiusmod tempor incididunt ut labore et dolore magna aliqua");
11    logger.warn("Ut enim ad minim veniam");
12    logger.error("quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat", Some(&error));
13    logger.fatal("Duis aute irure dolor in reprehenderit in voluptate", Some(&error));
14}
Source

pub fn info(&self, msg: impl Into<String>)

Logs a message at the info level.

use narlog::prelude::*;
let logger = Logger::new();
logger.info("consectetur adipiscing elit");
Examples found in repository?
examples/with_timestamp.rs (line 7)
3fn main() {
4    let logger_time = Logger::new().with_timestamp(TimestampType::Time);
5    let logger_datetime = Logger::new().with_timestamp(TimestampType::DateTime);
6    let logger_very_detailed = Logger::new().with_timestamp(TimestampType::VeryDetailed);
7    logger_time.info("consectetur adipiscing elit");
8    logger_datetime.warn("Ut enim ad minim veniam");
9    logger_very_detailed.error("quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat", None);
10}
More examples
Hide additional examples
examples/basic_logging.rs (line 9)
5fn main() {
6    let logger = Logger::new();
7    let error = io::Error::new(ErrorKind::Other, "velit esse cillum dolore eu fugiat nulla pariatur");
8    logger.trace("Lorem ipsum dolor sit amet");
9    logger.info("consectetur adipiscing elit");
10    logger.debug("sed do eiusmod tempor incididunt ut labore et dolore magna aliqua");
11    logger.warn("Ut enim ad minim veniam");
12    logger.error("quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat", Some(&error));
13    logger.fatal("Duis aute irure dolor in reprehenderit in voluptate", Some(&error));
14}
examples/with_prefix.rs (line 9)
5fn main() {
6    let logger = Logger::new().with_prefix("🦀");
7    let error = io::Error::new(ErrorKind::Other, "velit esse cillum dolore eu fugiat nulla pariatur");
8    logger.trace("Lorem ipsum dolor sit amet");
9    logger.info("consectetur adipiscing elit");
10    logger.debug("sed do eiusmod tempor incididunt ut labore et dolore magna aliqua");
11    logger.warn("Ut enim ad minim veniam");
12    logger.error("quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat", Some(&error));
13    logger.fatal("Duis aute irure dolor in reprehenderit in voluptate", Some(&error));
14}
Source

pub fn debug(&self, msg: impl Into<String>)

Logs a message at the debug level.

use narlog::prelude::*;
let logger = Logger::new();
logger.debug("sed do eiusmod tempor incididunt ut labore");
Examples found in repository?
examples/basic_logging.rs (line 10)
5fn main() {
6    let logger = Logger::new();
7    let error = io::Error::new(ErrorKind::Other, "velit esse cillum dolore eu fugiat nulla pariatur");
8    logger.trace("Lorem ipsum dolor sit amet");
9    logger.info("consectetur adipiscing elit");
10    logger.debug("sed do eiusmod tempor incididunt ut labore et dolore magna aliqua");
11    logger.warn("Ut enim ad minim veniam");
12    logger.error("quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat", Some(&error));
13    logger.fatal("Duis aute irure dolor in reprehenderit in voluptate", Some(&error));
14}
More examples
Hide additional examples
examples/with_prefix.rs (line 10)
5fn main() {
6    let logger = Logger::new().with_prefix("🦀");
7    let error = io::Error::new(ErrorKind::Other, "velit esse cillum dolore eu fugiat nulla pariatur");
8    logger.trace("Lorem ipsum dolor sit amet");
9    logger.info("consectetur adipiscing elit");
10    logger.debug("sed do eiusmod tempor incididunt ut labore et dolore magna aliqua");
11    logger.warn("Ut enim ad minim veniam");
12    logger.error("quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat", Some(&error));
13    logger.fatal("Duis aute irure dolor in reprehenderit in voluptate", Some(&error));
14}
Source

pub fn warn(&self, msg: impl Into<String>)

Logs a message at the warn level.

use narlog::prelude::*;
let logger = Logger::new();
logger.warn("Ut enim ad minim veniam");
Examples found in repository?
examples/with_timestamp.rs (line 8)
3fn main() {
4    let logger_time = Logger::new().with_timestamp(TimestampType::Time);
5    let logger_datetime = Logger::new().with_timestamp(TimestampType::DateTime);
6    let logger_very_detailed = Logger::new().with_timestamp(TimestampType::VeryDetailed);
7    logger_time.info("consectetur adipiscing elit");
8    logger_datetime.warn("Ut enim ad minim veniam");
9    logger_very_detailed.error("quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat", None);
10}
More examples
Hide additional examples
examples/basic_logging.rs (line 11)
5fn main() {
6    let logger = Logger::new();
7    let error = io::Error::new(ErrorKind::Other, "velit esse cillum dolore eu fugiat nulla pariatur");
8    logger.trace("Lorem ipsum dolor sit amet");
9    logger.info("consectetur adipiscing elit");
10    logger.debug("sed do eiusmod tempor incididunt ut labore et dolore magna aliqua");
11    logger.warn("Ut enim ad minim veniam");
12    logger.error("quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat", Some(&error));
13    logger.fatal("Duis aute irure dolor in reprehenderit in voluptate", Some(&error));
14}
examples/with_prefix.rs (line 11)
5fn main() {
6    let logger = Logger::new().with_prefix("🦀");
7    let error = io::Error::new(ErrorKind::Other, "velit esse cillum dolore eu fugiat nulla pariatur");
8    logger.trace("Lorem ipsum dolor sit amet");
9    logger.info("consectetur adipiscing elit");
10    logger.debug("sed do eiusmod tempor incididunt ut labore et dolore magna aliqua");
11    logger.warn("Ut enim ad minim veniam");
12    logger.error("quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat", Some(&error));
13    logger.fatal("Duis aute irure dolor in reprehenderit in voluptate", Some(&error));
14}
Source

pub fn error(&self, msg: impl Into<String>, err: Option<&dyn Error>)

Logs a message at the error level, with optional error details.

use narlog::prelude::*;
use std::io::{self, ErrorKind};

let logger = Logger::new();
let error = io::Error::new(ErrorKind::Other, "extra details");
logger.error("Something went wrong", Some(&error));
logger.error("Another error without details", None);
Examples found in repository?
examples/with_timestamp.rs (line 9)
3fn main() {
4    let logger_time = Logger::new().with_timestamp(TimestampType::Time);
5    let logger_datetime = Logger::new().with_timestamp(TimestampType::DateTime);
6    let logger_very_detailed = Logger::new().with_timestamp(TimestampType::VeryDetailed);
7    logger_time.info("consectetur adipiscing elit");
8    logger_datetime.warn("Ut enim ad minim veniam");
9    logger_very_detailed.error("quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat", None);
10}
More examples
Hide additional examples
examples/basic_logging.rs (line 12)
5fn main() {
6    let logger = Logger::new();
7    let error = io::Error::new(ErrorKind::Other, "velit esse cillum dolore eu fugiat nulla pariatur");
8    logger.trace("Lorem ipsum dolor sit amet");
9    logger.info("consectetur adipiscing elit");
10    logger.debug("sed do eiusmod tempor incididunt ut labore et dolore magna aliqua");
11    logger.warn("Ut enim ad minim veniam");
12    logger.error("quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat", Some(&error));
13    logger.fatal("Duis aute irure dolor in reprehenderit in voluptate", Some(&error));
14}
examples/with_prefix.rs (line 12)
5fn main() {
6    let logger = Logger::new().with_prefix("🦀");
7    let error = io::Error::new(ErrorKind::Other, "velit esse cillum dolore eu fugiat nulla pariatur");
8    logger.trace("Lorem ipsum dolor sit amet");
9    logger.info("consectetur adipiscing elit");
10    logger.debug("sed do eiusmod tempor incididunt ut labore et dolore magna aliqua");
11    logger.warn("Ut enim ad minim veniam");
12    logger.error("quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat", Some(&error));
13    logger.fatal("Duis aute irure dolor in reprehenderit in voluptate", Some(&error));
14}
Source

pub fn fatal(&self, msg: impl Into<String>, err: Option<&dyn Error>)

Logs a message at the fatal level, with optional error details.

use narlog::prelude::*;
use std::io::{self, ErrorKind};

let logger = Logger::new();
let error = io::Error::new(ErrorKind::Other, "catastrophic failure");
logger.fatal("System crashed", Some(&error));
logger.fatal("Fatal error without details", None);
Examples found in repository?
examples/basic_logging.rs (line 13)
5fn main() {
6    let logger = Logger::new();
7    let error = io::Error::new(ErrorKind::Other, "velit esse cillum dolore eu fugiat nulla pariatur");
8    logger.trace("Lorem ipsum dolor sit amet");
9    logger.info("consectetur adipiscing elit");
10    logger.debug("sed do eiusmod tempor incididunt ut labore et dolore magna aliqua");
11    logger.warn("Ut enim ad minim veniam");
12    logger.error("quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat", Some(&error));
13    logger.fatal("Duis aute irure dolor in reprehenderit in voluptate", Some(&error));
14}
More examples
Hide additional examples
examples/with_prefix.rs (line 13)
5fn main() {
6    let logger = Logger::new().with_prefix("🦀");
7    let error = io::Error::new(ErrorKind::Other, "velit esse cillum dolore eu fugiat nulla pariatur");
8    logger.trace("Lorem ipsum dolor sit amet");
9    logger.info("consectetur adipiscing elit");
10    logger.debug("sed do eiusmod tempor incididunt ut labore et dolore magna aliqua");
11    logger.warn("Ut enim ad minim veniam");
12    logger.error("quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat", Some(&error));
13    logger.fatal("Duis aute irure dolor in reprehenderit in voluptate", Some(&error));
14}

Auto Trait Implementations§

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impl Freeze for Logger

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impl RefUnwindSafe for Logger

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impl Send for Logger

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impl Sync for Logger

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impl Unpin for Logger

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impl UnwindSafe for Logger

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<D> OwoColorize for D

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fn fg<C>(&self) -> FgColorDisplay<'_, C, Self>
where C: Color,

Set the foreground color generically Read more
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fn bg<C>(&self) -> BgColorDisplay<'_, C, Self>
where C: Color,

Set the background color generically. Read more
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fn black(&self) -> FgColorDisplay<'_, Black, Self>

Change the foreground color to black
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fn on_black(&self) -> BgColorDisplay<'_, Black, Self>

Change the background color to black
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fn red(&self) -> FgColorDisplay<'_, Red, Self>

Change the foreground color to red
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fn on_red(&self) -> BgColorDisplay<'_, Red, Self>

Change the background color to red
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fn green(&self) -> FgColorDisplay<'_, Green, Self>

Change the foreground color to green
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fn on_green(&self) -> BgColorDisplay<'_, Green, Self>

Change the background color to green
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fn yellow(&self) -> FgColorDisplay<'_, Yellow, Self>

Change the foreground color to yellow
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fn on_yellow(&self) -> BgColorDisplay<'_, Yellow, Self>

Change the background color to yellow
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fn blue(&self) -> FgColorDisplay<'_, Blue, Self>

Change the foreground color to blue
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fn on_blue(&self) -> BgColorDisplay<'_, Blue, Self>

Change the background color to blue
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fn magenta(&self) -> FgColorDisplay<'_, Magenta, Self>

Change the foreground color to magenta
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fn on_magenta(&self) -> BgColorDisplay<'_, Magenta, Self>

Change the background color to magenta
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fn purple(&self) -> FgColorDisplay<'_, Magenta, Self>

Change the foreground color to purple
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fn on_purple(&self) -> BgColorDisplay<'_, Magenta, Self>

Change the background color to purple
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fn cyan(&self) -> FgColorDisplay<'_, Cyan, Self>

Change the foreground color to cyan
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fn on_cyan(&self) -> BgColorDisplay<'_, Cyan, Self>

Change the background color to cyan
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fn white(&self) -> FgColorDisplay<'_, White, Self>

Change the foreground color to white
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fn on_white(&self) -> BgColorDisplay<'_, White, Self>

Change the background color to white
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fn default_color(&self) -> FgColorDisplay<'_, Default, Self>

Change the foreground color to the terminal default
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fn on_default_color(&self) -> BgColorDisplay<'_, Default, Self>

Change the background color to the terminal default
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fn bright_black(&self) -> FgColorDisplay<'_, BrightBlack, Self>

Change the foreground color to bright black
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fn on_bright_black(&self) -> BgColorDisplay<'_, BrightBlack, Self>

Change the background color to bright black
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fn bright_red(&self) -> FgColorDisplay<'_, BrightRed, Self>

Change the foreground color to bright red
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fn on_bright_red(&self) -> BgColorDisplay<'_, BrightRed, Self>

Change the background color to bright red
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fn bright_green(&self) -> FgColorDisplay<'_, BrightGreen, Self>

Change the foreground color to bright green
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fn on_bright_green(&self) -> BgColorDisplay<'_, BrightGreen, Self>

Change the background color to bright green
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fn bright_yellow(&self) -> FgColorDisplay<'_, BrightYellow, Self>

Change the foreground color to bright yellow
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fn on_bright_yellow(&self) -> BgColorDisplay<'_, BrightYellow, Self>

Change the background color to bright yellow
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fn bright_blue(&self) -> FgColorDisplay<'_, BrightBlue, Self>

Change the foreground color to bright blue
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fn on_bright_blue(&self) -> BgColorDisplay<'_, BrightBlue, Self>

Change the background color to bright blue
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fn bright_magenta(&self) -> FgColorDisplay<'_, BrightMagenta, Self>

Change the foreground color to bright magenta
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fn on_bright_magenta(&self) -> BgColorDisplay<'_, BrightMagenta, Self>

Change the background color to bright magenta
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fn bright_purple(&self) -> FgColorDisplay<'_, BrightMagenta, Self>

Change the foreground color to bright purple
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fn on_bright_purple(&self) -> BgColorDisplay<'_, BrightMagenta, Self>

Change the background color to bright purple
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fn bright_cyan(&self) -> FgColorDisplay<'_, BrightCyan, Self>

Change the foreground color to bright cyan
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fn on_bright_cyan(&self) -> BgColorDisplay<'_, BrightCyan, Self>

Change the background color to bright cyan
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fn bright_white(&self) -> FgColorDisplay<'_, BrightWhite, Self>

Change the foreground color to bright white
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fn on_bright_white(&self) -> BgColorDisplay<'_, BrightWhite, Self>

Change the background color to bright white
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fn bold(&self) -> BoldDisplay<'_, Self>

Make the text bold
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fn dimmed(&self) -> DimDisplay<'_, Self>

Make the text dim
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fn italic(&self) -> ItalicDisplay<'_, Self>

Make the text italicized
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fn underline(&self) -> UnderlineDisplay<'_, Self>

Make the text underlined
Make the text blink
Make the text blink (but fast!)
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fn reversed(&self) -> ReversedDisplay<'_, Self>

Swap the foreground and background colors
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fn hidden(&self) -> HiddenDisplay<'_, Self>

Hide the text
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fn strikethrough(&self) -> StrikeThroughDisplay<'_, Self>

Cross out the text
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fn color<Color>(&self, color: Color) -> FgDynColorDisplay<'_, Color, Self>
where Color: DynColor,

Set the foreground color at runtime. Only use if you do not know which color will be used at compile-time. If the color is constant, use either OwoColorize::fg or a color-specific method, such as OwoColorize::green, Read more
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fn on_color<Color>(&self, color: Color) -> BgDynColorDisplay<'_, Color, Self>
where Color: DynColor,

Set the background color at runtime. Only use if you do not know what color to use at compile-time. If the color is constant, use either OwoColorize::bg or a color-specific method, such as OwoColorize::on_yellow, Read more
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fn fg_rgb<const R: u8, const G: u8, const B: u8>( &self, ) -> FgColorDisplay<'_, CustomColor<R, G, B>, Self>

Set the foreground color to a specific RGB value.
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fn bg_rgb<const R: u8, const G: u8, const B: u8>( &self, ) -> BgColorDisplay<'_, CustomColor<R, G, B>, Self>

Set the background color to a specific RGB value.
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fn truecolor(&self, r: u8, g: u8, b: u8) -> FgDynColorDisplay<'_, Rgb, Self>

Sets the foreground color to an RGB value.
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fn on_truecolor(&self, r: u8, g: u8, b: u8) -> BgDynColorDisplay<'_, Rgb, Self>

Sets the background color to an RGB value.
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fn style(&self, style: Style) -> Styled<&Self>

Apply a runtime-determined style
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.