Cargo Features

[dependencies]
futures-util-either = { version = "0.2.0", default-features = false, features = ["std", "alloc", "futures_io", "tokio_io", "either", "futures-util"] }
default = futures_io, std, tokio_io

These default features are set whenever futures-util-either is added without default-features = false somewhere in the dependency tree.

std default futures_io tokio_io = alloc
alloc std
futures_io default = std

Enables std of futures-io

tokio_io default = std, tokio

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

either implicit feature

Enables either

either:

The enum Either with variants Left and Right is a general purpose sum type with two cases

futures-util implicit feature

Enables futures-util

futures-util:

Common utilities and extension traits for the futures-rs library

futures-io futures_io
tokio tokio_io