An easy-to-use task scheduler that can run arbitrary blocks:
* Every so often (e.g. every hour starting now) * Daily at a given time * Periodically starting at a given time (e.g. every other hour starting a noon) * Per a provide schedule (e.g. using Schedule instance you can run tasks every Monday and Friday) * A one time task at some point in the future
For ease of use tasks can be blocks passed to the scheduler (or any object that understands #value). For example:
"Start a new task scheduler and keep it around" scheduler := TaskScheduler new. scheduler start.
"Let's save the image every hour" scheduler do: [Smalltalk snapshot: true andQuit: false] every: 60 minutes.
"Let's run a backup at 2am every day" scheduler do: ["backup code here"] at: '2am'
"Let's perform a bank transfer every other hour starting at 1pm" scheduler do: ["swiss bank account transfer code"] at: '1pm' every: 2 hours.
"Let's do a one time email reminder" scheduler doOnce: ["email reminder to go on honeymoon"] at: '2005-1-15T8:00'
"You can delete tasks by sending #delete to them" (scheduler taskAt: 1) delete
"Stop the scheduler from running -- but don't delete its tasks" scheduler stop.
Read the provided tests for more examples (or visit squeak.saltypickle.com for more info).