Enum LoopControl

pub enum LoopControl<B = (), C = (), S = ()> {
    Break(B),
    Continue(C),
    Repeat(S),
}

Used to emulate the keywords’ behavior inside the closure passed to ForEachRepeat::for_each_repeat.

Example

use for_each_repeat::{ForEachRepeat, LoopControl};
let r = (2..100).for_each_repeat(|x| {
    if 323 % x == 0 {
        return LoopControl::Break(x)
    }

    LoopControl::Continue(())
});
assert_eq!(r, Some(17));

It is named LoopControl to avoid confusion with ControlFlow enum from std.

Variants

Break(B)

Break out of the loop and optionally return a resulting value.

Continue(C)

Skip the rest of the loop and continue the next iteration advancing the iterator.

Repeat(S)

Come back to the beginning of the loop not advancing the iterator, with the given value for the iteration.

Implementations

impl<C, S> LoopControl<(), C, S>

pub const BREAK: Self

The Break variant holding a unit if you don’t want to write (()) all the time.

impl<B, S> LoopControl<B, (), S>

pub const CONTINUE: Self

The Continue variant holding a unit if you don’t want to write (()) all the time.

impl<B, C> LoopControl<B, C, ()>

pub const REPEAT: Self

The Repeat variant holding a unit if you don’t want to write (()) all the time.

Trait Implementations

impl<B: Clone, C: Clone, S: Clone> Clone for LoopControl<B, C, S>

fn clone(&self) -> LoopControl<B, C, S>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<B: Debug, C: Debug, S: Debug> Debug for LoopControl<B, C, S>

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

Formats the value using the given formatter.

impl<B, C, S> Display for LoopControl<B, C, S>

where B: Display, C: Display, S: Display,

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

Formats the value using the given formatter.

impl<B: Hash, C: Hash, S: Hash> Hash for LoopControl<B, C, S>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<B: Ord, C: Ord, S: Ord> Ord for LoopControl<B, C, S>

fn cmp(&self, other: &LoopControl<B, C, S>) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl<B: PartialEq, C: PartialEq, S: PartialEq> PartialEq for LoopControl<B, C, S>

fn eq(&self, other: &LoopControl<B, C, S>) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<B: PartialOrd, C: PartialOrd, S: PartialOrd> PartialOrd for LoopControl<B, C, S>

fn partial_cmp(&self, other: &LoopControl<B, C, S>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<B: Copy, C: Copy, S: Copy> Copy for LoopControl<B, C, S>

impl<B: Eq, C: Eq, S: Eq> Eq for LoopControl<B, C, S>

impl<B, C, S> StructuralPartialEq for LoopControl<B, C, S>