emit_core 1.18.0

Core APIs and runtime infrastructure for emit.
Documentation 
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/*!
The [`Empty`] type.

An [`Empty`] can be used as a default in place of a more meaningful implementation of most traits. For example, for [`crate::props::Props`], it behaves like an empty set, for [`crate::emitter::Emitter`]s, it discards emitted events, and for [`crate::filter::Filter`]s, it always evaluates to `true`.
*/

/**
A type that behaves like a default, empty, null value.
*/
#[derive(Default, Debug, Clone, Copy)]
pub struct Empty;

impl Empty {
    /**
    Create an empty value.
    */
    pub const fn new() -> Self {
        Empty
    }
}