Cargo Features

[dependencies]
either = { version = "1.15.0", default-features = false, features = ["std", "use_std", "serde"] }
default = std

The std feature is set by default whenever either is added without default-features = false somewhere in the dependency tree.

std default use_std?
use_std = std

deprecated alias

Features from optional dependencies

serde implicit feature

Enables serde

serde:

A generic serialization/deserialization framework

Affects either::serde_untagged, either::serde_untagged_optional