3 releases (breaking)
0.3.0 | May 15, 2023 |
---|---|
0.2.0 | May 6, 2021 |
0.1.0 | Apr 10, 2020 |
#47 in #struct-fields
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Used in dateless
60KB
1.5K
SLoC
optfield
optfield
is a macro that, given a struct, generates another struct with
the same fields, but wrapped in Option<T>
.
Minimum rustc version: 1.56.0
Install
cargo add optfield
Use
optfield
takes the opt struct name as its first argument:
use optfield::optfield;
#[optfield(Opt)]
struct MyStruct<T> {
text: String,
number: i32,
generic: T,
}
This will generate another struct that looks like:
struct Opt<T> {
text: Option<String>,
number: Option<i32>,
generic: Option<T>,
}
optfield
supports defining visibility, documentation, attributes and merge
methods. For more details and examples check its documentation.
License
Licensed under either of Apache License, Version 2.0 or MIT at your option.
Dependencies
~325–780KB
~19K SLoC