Std.Io.IoError

type

This declaration introduces a public type.

What it does

Why an operation over a file did not do what it was asked.

One variant per cause a caller can act on differently: a missing file is

created, a refused one is reported to a person, and a caller handed one

message for both could do neither. Other carries what the operating

system said, unchanged, for the causes this list does not name.

Read the signature

• This declaration has no value signature because it introduces a type or trait.