Trait ConstantTimeResult 

pub trait ConstantTimeResult<T, E> {
    // Required methods
    fn ct_is_ok(&self) -> bool;
    fn ct_is_err(&self) -> bool;
    fn ct_map<U, F, G>(self, ok_fn: F, err_fn: G) -> U
       where F: FnOnce(T) -> U,
             G: FnOnce(E) -> U,
             U: ConditionallySelectable;
}

Deprecated compatibility helpers for inspecting a Result.

These methods perform ordinary, data-dependent branching. Their historical ct_ prefix is inaccurate; use Result::is_ok, Result::is_err, or Result::map_or_else instead. No generic helper can make arbitrary closures and enum-variant control flow constant-time.

Required Methods

fn ct_is_ok(&self) -> bool

👎Deprecated:

ct_is_ok branches on the Result variant; use Result::is_ok and do not treat the variant as secret

Equivalent to Result::is_ok; this is not constant-time.

fn ct_is_err(&self) -> bool

👎Deprecated:

ct_is_err branches on the Result variant; use Result::is_err and do not treat the variant as secret

Equivalent to Result::is_err; this is not constant-time.

fn ct_map<U, F, G>(self, ok_fn: F, err_fn: G) -> U

where F: FnOnce(T) -> U, G: FnOnce(E) -> U, U: ConditionallySelectable,

👎Deprecated:

ct_map invokes only the selected closure; use Result::map_or_else and do not treat the variant as secret

Map the selected variant; only one closure is called.

This is not constant-time. The ConditionallySelectable bound remains only to avoid breaking the legacy method signature.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<T, E> ConstantTimeResult<T, E> for Result<T, E>

fn ct_is_ok(&self) -> bool

👎Deprecated:

ct_is_ok branches on the Result variant; use Result::is_ok and do not treat the variant as secret

fn ct_is_err(&self) -> bool

👎Deprecated:

ct_is_err branches on the Result variant; use Result::is_err and do not treat the variant as secret

fn ct_map<U, F, G>(self, ok_fn: F, err_fn: G) -> U

where F: FnOnce(T) -> U, G: FnOnce(E) -> U, U: ConditionallySelectable,

👎Deprecated:

ct_map invokes only the selected closure; use Result::map_or_else and do not treat the variant as secret

Implementors