Struct OptionChain 

pub struct OptionChain<T> { /* private fields */ }

A builder-style wrapper for chaining option operations.

Provides a fluent API for building complex option expressions.

Implementations

impl<T> OptionChain<T>

pub fn from(opt: Option<T>) -> Self

Start a chain from an option value.

pub fn of(v: T) -> Self

Start a chain from a value (wraps in Some).

pub fn empty() -> Self

Start an empty chain.

pub fn map<U>(self, f: impl FnOnce(T) -> U) -> OptionChain<U>

Apply a map operation.

pub fn flat_map<U>(self, f: impl FnOnce(T) -> Option<U>) -> OptionChain<U>

Apply a flatmap operation.

pub fn filter(self, pred: impl FnOnce(&T) -> bool) -> Self

Apply a filter operation.

pub fn or_else(self, fallback: Option<T>) -> Self

Provide a fallback value.

pub fn get(self) -> Option<T>

Extract the final value.

pub fn get_or(self, default: T) -> T

Extract with a default.

pub fn is_present(&self) -> bool

Check if this chain has a value.

pub fn peek(&self) -> Option<&T>

Peek at the inner value without consuming.