Struct ockam_core::compat::fmt::DebugTuple
1.2.0 · source · [−]pub struct DebugTuple<'a, 'b> where
'b: 'a, { /* private fields */ }
Expand description
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.
Examples
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()
}
}
assert_eq!(
format!("{:?}", Foo(10, "Hello World".to_string())),
"Foo(10, \"Hello World\")",
);
Implementations
sourceimpl<'a, 'b> DebugTuple<'a, 'b> where
'b: 'a,
impl<'a, 'b> DebugTuple<'a, 'b> where
'b: 'a,
sourcepub fn field(&mut self, value: &dyn Debug) -> &mut DebugTuple<'a, 'b>
pub fn field(&mut self, value: &dyn Debug) -> &mut DebugTuple<'a, 'b>
Adds a new field to the generated tuple struct output.
Examples
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) // We add the first field.
.field(&self.1) // We add the second field.
.finish() // We're good to go!
}
}
assert_eq!(
format!("{:?}", Foo(10, "Hello World".to_string())),
"Foo(10, \"Hello World\")",
);
sourcepub fn finish(&mut self) -> Result<(), Error>
pub fn finish(&mut self) -> Result<(), Error>
Finishes output and returns any error encountered.
Examples
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() // You need to call it to "finish" the
// tuple formatting.
}
}
assert_eq!(
format!("{:?}", Foo(10, "Hello World".to_string())),
"Foo(10, \"Hello World\")",
);
Auto Trait Implementations
impl<'a, 'b> !RefUnwindSafe for DebugTuple<'a, 'b>
impl<'a, 'b> !Send for DebugTuple<'a, 'b>
impl<'a, 'b> !Sync for DebugTuple<'a, 'b>
impl<'a, 'b> Unpin for DebugTuple<'a, 'b> where
'b: 'a,
impl<'a, 'b> !UnwindSafe for DebugTuple<'a, 'b>
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> Instrument for T
impl<T> Instrument for T
sourcefn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
sourcefn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
fn vzip(self) -> V
sourceimpl<T> WithSubscriber for T
impl<T> WithSubscriber for T
sourcefn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,
Attaches the provided Subscriber
to this type, returning a
WithDispatch
wrapper. Read more
sourcefn with_current_subscriber(self) -> WithDispatch<Self>
fn with_current_subscriber(self) -> WithDispatch<Self>
Attaches the current default Subscriber
to this type, returning a
WithDispatch
wrapper. Read more