Cargo Features

[dependencies]
magicsquare = { version = "0.2.0", default-features = false, features = ["ndarray-csv"] }
default = ndarray-csv

The ndarray-csv feature is set by default whenever magicsquare is added without default-features = false somewhere in the dependency tree.

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.

ndarray-csv default