3 stable releases
2.0.0 | Aug 19, 2024 |
---|---|
1.0.1 | Oct 14, 2023 |
1.0.0 | Mar 8, 2021 |
#5 in #try
360 downloads per month
Used in 2 crates
5KB
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TryDefault
A 'try' version of Default
, where it returns an Option::Some
wrapping the default value when present.
It returns Option::None
when there is no Default
available.
You can in theory call this on any type to retrive it's Default, if there is one!
use ::try_default::TryDefault;
// Set to `Some(0)`.
let default_num = <u32>::try_default();
// Set to `None`, as `::std::fs::File` has no `Default`.
let default_file = <::std::fs::File>::try_default();
Notes
- Requires nightly for
specialization
feature. - Is possibly the world's most pointless crate. But it's here if you need it!