Enum Effect 

pub enum Effect {
    Pure,
    Io,
    Alloc,
    Panic,
}

the four effect annotations. this is the parser’s record of which keyword appeared (is pure etc.); the type checker’s effects module (Phase 3) owns the real effect lattice and inference.

Variants

Pure

is pure – only computes; no IO, no allocation, no panic.

Io

is io – may perform input/output.

Alloc

is alloc – may allocate.

Panic

is panic – may panic.

Trait Implementations

impl Clone for Effect

fn clone(&self) -> Effect

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Effect

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

Formats the value using the given formatter.

impl PartialEq for Effect

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl StructuralPartialEq for Effect