Trait OptionContext 

pub trait OptionContext<T>: Sealed {
    // Required methods
    fn error(self, context: impl Display) -> Option<T>;
    fn warn(self, context: impl Display) -> Option<T>;
    fn info(self, context: impl Display) -> Option<T>;
    fn debug(self, context: impl Display) -> Option<T>;
    fn trace(self, context: impl Display) -> Option<T>;
    fn with_error<F: FnOnce() -> D, D: Display>(self, f: F) -> Option<T>;
    fn with_warn<F: FnOnce() -> D, D: Display>(self, f: F) -> Option<T>;
    fn with_info<F: FnOnce() -> D, D: Display>(self, f: F) -> Option<T>;
    fn with_debug<F: FnOnce() -> D, D: Display>(self, f: F) -> Option<T>;
    fn with_trace<F: FnOnce() -> D, D: Display>(self, f: F) -> Option<T>;
}

Available on crate features tracing or log or defmt or context_stub only.

For logging when a None is encountered.

Required Methods

fn error(self, context: impl Display) -> Option<T>

Log the context as an “error” if the Option is None.

fn warn(self, context: impl Display) -> Option<T>

Log the context as an “warn” if the Option is None.

fn info(self, context: impl Display) -> Option<T>

Log the context as an “info” if the Option is None.

fn debug(self, context: impl Display) -> Option<T>

Log the context as an “debug” if the Option is None.

fn trace(self, context: impl Display) -> Option<T>

Log the context as an “trace” if the Option is None.

fn with_error<F: FnOnce() -> D, D: Display>(self, f: F) -> Option<T>

Lazily call [f] if the Option is None and log as an “error”.

fn with_warn<F: FnOnce() -> D, D: Display>(self, f: F) -> Option<T>

Lazily call [f] if the Option is None and log as an “warn”.

fn with_info<F: FnOnce() -> D, D: Display>(self, f: F) -> Option<T>

Lazily call [f] if the Option is None and log as an “info”.

fn with_debug<F: FnOnce() -> D, D: Display>(self, f: F) -> Option<T>

Lazily call [f] if the Option is None and log as an “debug”.

fn with_trace<F: FnOnce() -> D, D: Display>(self, f: F) -> Option<T>

Lazily call [f] if the Option is None and log as an “trace”.

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> OptionContext<T> for Option<T>

Available on crate features tracing or log or context_stub only.

fn error(self, context: impl Display) -> Option<T>

Available on crate features tracing or log or defmt or context_stub only.

fn warn(self, context: impl Display) -> Option<T>

Available on crate features tracing or log or defmt or context_stub only.

fn info(self, context: impl Display) -> Option<T>

Available on crate features tracing or log or defmt or context_stub only.

fn debug(self, context: impl Display) -> Option<T>

Available on crate features tracing or log or defmt or context_stub only.

fn trace(self, context: impl Display) -> Option<T>

Available on crate features tracing or log or defmt or context_stub only.

fn with_error<F: FnOnce() -> D, D: Display>(self, f: F) -> Option<T>

Available on crate features tracing or log or defmt or context_stub only.

fn with_warn<F: FnOnce() -> D, D: Display>(self, f: F) -> Option<T>

Available on crate features tracing or log or defmt or context_stub only.

fn with_info<F: FnOnce() -> D, D: Display>(self, f: F) -> Option<T>

Available on crate features tracing or log or defmt or context_stub only.

fn with_debug<F: FnOnce() -> D, D: Display>(self, f: F) -> Option<T>

Available on crate features tracing or log or defmt or context_stub only.

fn with_trace<F: FnOnce() -> D, D: Display>(self, f: F) -> Option<T>

Available on crate features tracing or log or defmt or context_stub only.

Implementors