Cargo Features

[dependencies]
arcstr = { version = "1.1.5", default-features = false, features = ["std", "substr", "substr-usize-indices", "serde"] }
default = substr

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

std
substr default substr-usize-indices?
substr-usize-indices = substr

Features from optional dependencies

serde implicit feature

Enables serde

serde:

A generic serialization/deserialization framework