#[must_use = "must eventually call `finish()` on Debug builders"]
pub struct DebugTuple<'a, 'b> where
'b: 'a,
'b: 'a,
'b: 'b, { /* fields omitted */ }
A struct to help with fmt::Debug
implementations.
This is useful when you wish to output a formatted tuple as a part of your
Debug::fmt
implementation.
This can be constructed by the
Formatter::debug_tuple
method.
use std::fmt;
struct Foo(i32, String);
impl fmt::Debug for Foo {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
fmt.debug_tuple("Foo")
.field(&self.0)
.field(&self.1)
.finish()
}
}
println!("{:?}", Foo(10, "Hello World".to_string()));
Adds a new field to the generated tuple struct output.
Finishes output and returns any error encountered.
🔬 This is a nightly-only experimental API. (try_from
)
The type returned in the event of a conversion error.
🔬 This is a nightly-only experimental API. (try_from
)
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more
type Error = <U as TryFrom<T>>::Error
🔬 This is a nightly-only experimental API. (try_from
)
The type returned in the event of a conversion error.
🔬 This is a nightly-only experimental API. (try_from
)
🔬 This is a nightly-only experimental API. (get_type_id
)
this method will likely be replaced by an associated static