Cargo Features

IString has no features set by default.

[dependencies]
istring = { version = "0.3.4", features = ["std", "size", "serialize", "rkyv"] }
std
size = datasize
serialize = serde
rkyv

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features.

datasize size?

With default features

serde serialize?

With default (std)