Module luminance::rw

I/O access rights.

I/O functions might operate in three favours:

• in read-only (R);
• in write-only (W);
• in read-write (RW).

That module exports that concept via unit-structs plus the notion of Readable and Writable. You can use that module to tag types and functions to add the concept of access.

Structs

R	Read-only access.
RW	Both read and write access.
W	Write-only access.

Traits

Readable	A trait that represents readable access; that is, R and RW.
Writable	A trait that represents writable access; that is, W and RW.