1.0.0[−][src]Trait tract_hir::internal::tract_downcast_rs::__std::fmt::LowerExp
e
formatting.
The LowerExp
trait should format its output in scientific notation with a lower-case e
.
For more information on formatters, see the module-level documentation.
Examples
Basic usage with f64
:
let x = 42.0; // 42.0 is '4.2e1' in scientific notation assert_eq!(format!("{:e}", x), "4.2e1");
Implementing LowerExp
on a type:
use std::fmt; struct Length(i32); impl fmt::LowerExp for Length { fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { let val = f64::from(self.0); fmt::LowerExp::fmt(&val, f) // delegate to f64's implementation } } let l = Length(100); assert_eq!( format!("l in scientific notation is: {:e}", l), "l in scientific notation is: 1e2" ); assert_eq!( format!("l in scientific notation is: {:05e}", l), "l in scientific notation is: 001e2" );
Required methods
fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>
Formats the value using the given formatter.
Implementations on Foreign Types
impl LowerExp for u32
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impl<'_, T> LowerExp for &'_ T where
T: LowerExp + ?Sized,
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T: LowerExp + ?Sized,
impl LowerExp for u16
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impl<'_, T> LowerExp for &'_ mut T where
T: LowerExp + ?Sized,
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T: LowerExp + ?Sized,
impl LowerExp for u64
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impl LowerExp for u128
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impl LowerExp for f64
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impl LowerExp for i64
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impl LowerExp for isize
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impl LowerExp for i8
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impl LowerExp for i128
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impl LowerExp for usize
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impl LowerExp for u8
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impl LowerExp for i16
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impl LowerExp for i32
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impl LowerExp for f32
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impl<'a, I> LowerExp for Format<'a, I> where
I: Iterator,
<I as Iterator>::Item: LowerExp,
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I: Iterator,
<I as Iterator>::Item: LowerExp,
impl<T> LowerExp for Complex<T> where
T: LowerExp + Num + PartialOrd<T> + Clone,
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T: LowerExp + Num + PartialOrd<T> + Clone,
impl LowerExp for bf16
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impl LowerExp for f16
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Implementors
impl<'a, A, S, D> LowerExp for ArrayBase<S, D> where
A: LowerExp,
D: Dimension,
S: Data<Elem = A>,
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A: LowerExp,
D: Dimension,
S: Data<Elem = A>,
Format the array using LowerExp
and apply the formatting parameters used
to each element.
The array is shown in multiline style.
impl<'a, I> LowerExp for tract_hir::internal::tract_itertools::Format<'a, I> where
I: Iterator,
<I as Iterator>::Item: LowerExp,
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I: Iterator,
<I as Iterator>::Item: LowerExp,