Crate discretionary 

Discretionary

A tiny procedural macro to make all your struct fields optional. For now, this package is essentially trivial, although it might be useful if you have some huge struct that needs to have all its field types converted from T to Option<T>. (I needed that and now this exists!)

Usage

Add discretionary as a dependency in your Cargo.toml:

[dependencies]
discretionary = "0.1"

Then decorate your struct with the #[make_optional] macro. That’s it!

For example, the following

use discretionary::make_optional;

#[make_optional]
struct ExampleStruct {
    id: usize,
    name: String,
}

will be re-written to something like

struct ExampleStruct {
    id: Option<usize>,
    name: Option<String>,
}

Attribute Macros

make_optional

Processes a struct to convert the fields to Options