Enum HistogramError 

#[non_exhaustive]
pub enum HistogramError {
    InvalidSchema(i8),
    InvalidCount {
        what: &'static str,
        value: f64,
    },
    CountNotExact {
        what: &'static str,
        value: f64,
    },
    UnorderedBuckets {
        side: &'static str,
        index: i32,
    },
    InvalidZeroThreshold(f64),
    CustomValues(&'static str),
    CountMismatch {
        observed: f64,
        declared: f64,
    },
}

Everything that can be wrong with a histogram.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

InvalidSchema(i8)

The schema is outside -4 ..= 8 and is not CUSTOM_BUCKETS_SCHEMA.

InvalidCount

A count was negative, or not finite.

Fields

what: &'static str

Which count — count, zero_count, or a bucket’s.

value: f64

The offending value.

CountNotExact

A count exceeded what f64 represents exactly.

Fields

what: &'static str

Which count overflowed the exact range.

value: f64

The offending value.

UnorderedBuckets

Buckets were not sorted, or an index appeared twice.

Fields

side: &'static str

"positive" or "negative".

index: i32

The index at which the order broke.

InvalidZeroThreshold(f64)

zero_threshold was negative or not finite.

CustomValues(&'static str)

Custom boundaries were supplied for an exponential schema, or omitted for CUSTOM_BUCKETS_SCHEMA.

CountMismatch

The bucket counts add up to more than count.

Fields

observed: f64

What the buckets and zero bucket add up to.

declared: f64

What count claims.

Trait Implementations

impl Clone for HistogramError

fn clone(&self) -> HistogramError

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for HistogramError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for HistogramError

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for HistogramError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for HistogramError

fn eq(&self, other: &HistogramError) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for HistogramError