Enum UseColours 

pub enum UseColours {
    Always,
    Automatic,
    Never,
}

Under what circumstances we should display coloured, rather than plain, output to the terminal.

By default, we want to display the colours when stdout can display them. Turning them on when output is going to, say, a pipe, would make programs such as grep or more not work properly. So the Automatic mode does this check and only displays colours when they can be truly appreciated.

Variants

Always

Display them even when output isn’t going to a terminal.

Automatic

Display them when output is going to a terminal, but not otherwise.

Never

Never display them, even when output is going to a terminal.

Trait Implementations

impl Clone for UseColours

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for UseColours

impl Debug for UseColours

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

Formats the value using the given formatter.

impl Eq for UseColours

impl PartialEq for UseColours

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for UseColours