Struct CronExpression 

pub struct CronExpression { /* private fields */ }

Cron expression for scheduling tasks

Supports standard cron syntax with 5 fields: minute hour day-of-month month day-of-week

Examples

use ferro_rs::CronExpression;

// Every minute
let expr = CronExpression::every_minute();

// Daily at 3:00 AM
let expr = CronExpression::daily_at("03:00");

// Custom cron expression
let expr = CronExpression::parse("0 */2 * * *").unwrap(); // Every 2 hours

Implementations

impl CronExpression

pub fn parse(expression: &str) -> Result<Self, String>

Parse a cron expression string

Format: minute hour day-of-month month day-of-week

Examples

• * * * * * - Every minute
• 0 * * * * - Every hour
• 0 3 * * * - Daily at 3:00 AM
• 0 0 * * 0 - Weekly on Sunday
• */5 * * * * - Every 5 minutes

pub fn is_due(&self) -> bool

Check if this expression is due now

pub fn expression(&self) -> &str

Get the raw cron expression string

pub fn at(self, time: &str) -> Self

Set the time component (modifies hour and minute)

pub fn every_minute() -> Self

Every minute: * * * * *

pub fn every_n_minutes(n: u32) -> Self

Every N minutes: */N * * * *

Panics

Panics if n is 0.

pub fn hourly() -> Self

Every hour at minute 0: 0 * * * *

pub fn hourly_at(minute: u32) -> Self

Every hour at specific minute: M * * * *

Panics

Panics if minute >= 60.

pub fn daily() -> Self

Daily at midnight: 0 0 * * *

pub fn daily_at(time: &str) -> Self

Daily at specific time: M H * * *

Accepts "HH:MM" format. Falls back to midnight on invalid input.

pub fn weekly() -> Self

Weekly on Sunday at midnight: 0 0 * * 0

pub fn weekly_on(day: DayOfWeek) -> Self

Weekly on specific day at midnight: 0 0 * * D

pub fn on_days(days: &[DayOfWeek]) -> Self

On specific days of the week at midnight.

Panics

Panics if days is empty.

pub fn monthly() -> Self

Monthly on the first day at midnight: 0 0 1 * *

pub fn monthly_on(day: u32) -> Self

Monthly on specific day at midnight: 0 0 D * *

Panics

Panics if day is 0 or > 31.

pub fn quarterly() -> Self

Quarterly on the first day of each quarter at midnight

pub fn yearly() -> Self

Yearly on January 1st at midnight: 0 0 1 1 *

pub fn weekdays() -> Self

On weekdays (Monday-Friday) at midnight

pub fn weekends() -> Self

On weekends (Saturday-Sunday) at midnight

Trait Implementations

impl Clone for CronExpression

fn clone(&self) -> CronExpression

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CronExpression

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

Formats the value using the given formatter.