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FnValue

Struct FnValue 

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pub struct FnValue {
    pub id: u64,
    pub name: Option<String>,
}
Expand description

A function value.

Functions are equal only to themselves (compared by id). Attempting to order function values — e.g. by using one as a map key or set element — is a runtime error and will panic with a clear message.

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§id: u64

Unique identifier assigned at creation.

§name: Option<String>

Optional human-readable name, for display.

Implementations§

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impl FnValue

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pub fn new_anonymous() -> Self

Create an anonymous function value with a fresh unique identity.

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pub fn new_named(name: impl Into<String>) -> Self

Create a named function value with a fresh unique identity.

Trait Implementations§

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impl Clone for FnValue

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fn clone(&self) -> FnValue

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for FnValue

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

Formats the value using the given formatter. Read more
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impl Display for FnValue

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

Formats the value using the given formatter. Read more
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impl Hash for FnValue

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq for FnValue

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

Functions are equal iff they share the same identity.

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

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

Auto Trait Implementations§

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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> Fmt for T
where T: Display,

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fn fg<C>(self, color: C) -> Foreground<Self>
where C: Into<Option<Color>>, Self: Display,

Give this value the specified foreground colour.
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fn bg<C>(self, color: C) -> Background<Self>
where C: Into<Option<Color>>, Self: Display,

Give this value the specified background colour.
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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<T> Paint for T
where T: ?Sized,

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fn fg(&self, value: Color) -> Painted<&T>

Returns a styled value derived from self with the foreground set to value.

This method should be used rarely. Instead, prefer to use color-specific builder methods like red() and green(), which have the same functionality but are pithier.

§Example

Set foreground color to white using fg():

use yansi::{Paint, Color};

painted.fg(Color::White);

Set foreground color to white using white().

use yansi::Paint;

painted.white();
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fn primary(&self) -> Painted<&T>

Returns self with the fg() set to [Color :: Primary].

§Example
println!("{}", value.primary());
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fn fixed(&self, color: u8) -> Painted<&T>

Returns self with the fg() set to [Color :: Fixed].

§Example
println!("{}", value.fixed(color));
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fn rgb(&self, r: u8, g: u8, b: u8) -> Painted<&T>

Returns self with the fg() set to [Color :: Rgb].

§Example
println!("{}", value.rgb(r, g, b));
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fn black(&self) -> Painted<&T>

Returns self with the fg() set to [Color :: Black].

§Example
println!("{}", value.black());
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fn red(&self) -> Painted<&T>

Returns self with the fg() set to [Color :: Red].

§Example
println!("{}", value.red());
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fn green(&self) -> Painted<&T>

Returns self with the fg() set to [Color :: Green].

§Example
println!("{}", value.green());
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fn yellow(&self) -> Painted<&T>

Returns self with the fg() set to [Color :: Yellow].

§Example
println!("{}", value.yellow());
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fn blue(&self) -> Painted<&T>

Returns self with the fg() set to [Color :: Blue].

§Example
println!("{}", value.blue());
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fn magenta(&self) -> Painted<&T>

Returns self with the fg() set to [Color :: Magenta].

§Example
println!("{}", value.magenta());
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fn cyan(&self) -> Painted<&T>

Returns self with the fg() set to [Color :: Cyan].

§Example
println!("{}", value.cyan());
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fn white(&self) -> Painted<&T>

Returns self with the fg() set to [Color :: White].

§Example
println!("{}", value.white());
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fn bright_black(&self) -> Painted<&T>

Returns self with the fg() set to [Color :: BrightBlack].

§Example
println!("{}", value.bright_black());
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fn bright_red(&self) -> Painted<&T>

Returns self with the fg() set to [Color :: BrightRed].

§Example
println!("{}", value.bright_red());
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fn bright_green(&self) -> Painted<&T>

Returns self with the fg() set to [Color :: BrightGreen].

§Example
println!("{}", value.bright_green());
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fn bright_yellow(&self) -> Painted<&T>

Returns self with the fg() set to [Color :: BrightYellow].

§Example
println!("{}", value.bright_yellow());
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fn bright_blue(&self) -> Painted<&T>

Returns self with the fg() set to [Color :: BrightBlue].

§Example
println!("{}", value.bright_blue());
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fn bright_magenta(&self) -> Painted<&T>

Returns self with the fg() set to [Color :: BrightMagenta].

§Example
println!("{}", value.bright_magenta());
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fn bright_cyan(&self) -> Painted<&T>

Returns self with the fg() set to [Color :: BrightCyan].

§Example
println!("{}", value.bright_cyan());
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fn bright_white(&self) -> Painted<&T>

Returns self with the fg() set to [Color :: BrightWhite].

§Example
println!("{}", value.bright_white());
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fn bg(&self, value: Color) -> Painted<&T>

Returns a styled value derived from self with the background set to value.

This method should be used rarely. Instead, prefer to use color-specific builder methods like on_red() and on_green(), which have the same functionality but are pithier.

§Example

Set background color to red using fg():

use yansi::{Paint, Color};

painted.bg(Color::Red);

Set background color to red using on_red().

use yansi::Paint;

painted.on_red();
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fn on_primary(&self) -> Painted<&T>

Returns self with the bg() set to [Color :: Primary].

§Example
println!("{}", value.on_primary());
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fn on_fixed(&self, color: u8) -> Painted<&T>

Returns self with the bg() set to [Color :: Fixed].

§Example
println!("{}", value.on_fixed(color));
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fn on_rgb(&self, r: u8, g: u8, b: u8) -> Painted<&T>

Returns self with the bg() set to [Color :: Rgb].

§Example
println!("{}", value.on_rgb(r, g, b));
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fn on_black(&self) -> Painted<&T>

Returns self with the bg() set to [Color :: Black].

§Example
println!("{}", value.on_black());
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fn on_red(&self) -> Painted<&T>

Returns self with the bg() set to [Color :: Red].

§Example
println!("{}", value.on_red());
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fn on_green(&self) -> Painted<&T>

Returns self with the bg() set to [Color :: Green].

§Example
println!("{}", value.on_green());
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fn on_yellow(&self) -> Painted<&T>

Returns self with the bg() set to [Color :: Yellow].

§Example
println!("{}", value.on_yellow());
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fn on_blue(&self) -> Painted<&T>

Returns self with the bg() set to [Color :: Blue].

§Example
println!("{}", value.on_blue());
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fn on_magenta(&self) -> Painted<&T>

Returns self with the bg() set to [Color :: Magenta].

§Example
println!("{}", value.on_magenta());
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fn on_cyan(&self) -> Painted<&T>

Returns self with the bg() set to [Color :: Cyan].

§Example
println!("{}", value.on_cyan());
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fn on_white(&self) -> Painted<&T>

Returns self with the bg() set to [Color :: White].

§Example
println!("{}", value.on_white());
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fn on_bright_black(&self) -> Painted<&T>

Returns self with the bg() set to [Color :: BrightBlack].

§Example
println!("{}", value.on_bright_black());
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fn on_bright_red(&self) -> Painted<&T>

Returns self with the bg() set to [Color :: BrightRed].

§Example
println!("{}", value.on_bright_red());
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fn on_bright_green(&self) -> Painted<&T>

Returns self with the bg() set to [Color :: BrightGreen].

§Example
println!("{}", value.on_bright_green());
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fn on_bright_yellow(&self) -> Painted<&T>

Returns self with the bg() set to [Color :: BrightYellow].

§Example
println!("{}", value.on_bright_yellow());
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fn on_bright_blue(&self) -> Painted<&T>

Returns self with the bg() set to [Color :: BrightBlue].

§Example
println!("{}", value.on_bright_blue());
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fn on_bright_magenta(&self) -> Painted<&T>

Returns self with the bg() set to [Color :: BrightMagenta].

§Example
println!("{}", value.on_bright_magenta());
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fn on_bright_cyan(&self) -> Painted<&T>

Returns self with the bg() set to [Color :: BrightCyan].

§Example
println!("{}", value.on_bright_cyan());
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fn on_bright_white(&self) -> Painted<&T>

Returns self with the bg() set to [Color :: BrightWhite].

§Example
println!("{}", value.on_bright_white());
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fn attr(&self, value: Attribute) -> Painted<&T>

Enables the styling Attribute value.

This method should be used rarely. Instead, prefer to use attribute-specific builder methods like bold() and underline(), which have the same functionality but are pithier.

§Example

Make text bold using attr():

use yansi::{Paint, Attribute};

painted.attr(Attribute::Bold);

Make text bold using using bold().

use yansi::Paint;

painted.bold();
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fn bold(&self) -> Painted<&T>

Returns self with the attr() set to [Attribute :: Bold].

§Example
println!("{}", value.bold());
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fn dim(&self) -> Painted<&T>

Returns self with the attr() set to [Attribute :: Dim].

§Example
println!("{}", value.dim());
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fn italic(&self) -> Painted<&T>

Returns self with the attr() set to [Attribute :: Italic].

§Example
println!("{}", value.italic());
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fn underline(&self) -> Painted<&T>

Returns self with the attr() set to [Attribute :: Underline].

§Example
println!("{}", value.underline());

Returns self with the attr() set to [Attribute :: Blink].

§Example
println!("{}", value.blink());

Returns self with the attr() set to [Attribute :: RapidBlink].

§Example
println!("{}", value.rapid_blink());
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fn invert(&self) -> Painted<&T>

Returns self with the attr() set to [Attribute :: Invert].

§Example
println!("{}", value.invert());
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fn conceal(&self) -> Painted<&T>

Returns self with the attr() set to [Attribute :: Conceal].

§Example
println!("{}", value.conceal());
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fn strike(&self) -> Painted<&T>

Returns self with the attr() set to [Attribute :: Strike].

§Example
println!("{}", value.strike());
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fn quirk(&self, value: Quirk) -> Painted<&T>

Enables the yansi Quirk value.

This method should be used rarely. Instead, prefer to use quirk-specific builder methods like mask() and wrap(), which have the same functionality but are pithier.

§Example

Enable wrapping using .quirk():

use yansi::{Paint, Quirk};

painted.quirk(Quirk::Wrap);

Enable wrapping using wrap().

use yansi::Paint;

painted.wrap();
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fn mask(&self) -> Painted<&T>

Returns self with the quirk() set to [Quirk :: Mask].

§Example
println!("{}", value.mask());
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fn wrap(&self) -> Painted<&T>

Returns self with the quirk() set to [Quirk :: Wrap].

§Example
println!("{}", value.wrap());
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fn linger(&self) -> Painted<&T>

Returns self with the quirk() set to [Quirk :: Linger].

§Example
println!("{}", value.linger());
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fn clear(&self) -> Painted<&T>

👎Deprecated since 1.0.1:

renamed to resetting() due to conflicts with Vec::clear(). The clear() method will be removed in a future release.

Returns self with the quirk() set to [Quirk :: Clear].

§Example
println!("{}", value.clear());
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fn resetting(&self) -> Painted<&T>

Returns self with the quirk() set to [Quirk :: Resetting].

§Example
println!("{}", value.resetting());
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fn bright(&self) -> Painted<&T>

Returns self with the quirk() set to [Quirk :: Bright].

§Example
println!("{}", value.bright());
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fn on_bright(&self) -> Painted<&T>

Returns self with the quirk() set to [Quirk :: OnBright].

§Example
println!("{}", value.on_bright());
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fn whenever(&self, value: Condition) -> Painted<&T>

Conditionally enable styling based on whether the Condition value applies. Replaces any previous condition.

See the crate level docs for more details.

§Example

Enable styling painted only when both stdout and stderr are TTYs:

use yansi::{Paint, Condition};

painted.red().on_yellow().whenever(Condition::STDOUTERR_ARE_TTY);
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fn new(self) -> Painted<Self>
where Self: Sized,

Create a new Painted with a default Style. Read more
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fn paint<S>(&self, style: S) -> Painted<&Self>
where S: Into<Style>,

Apply a style wholesale to self. Any previous style is replaced. Read more
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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fn to_string(&self) -> String

Converts the given value to a String. Read more
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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.