# after Schedule a callback to run after `n` milliseconds. ## Syntax

[after $ms $f]

## Parameters - `$ms` — Number of milliseconds to wait. - `$f` — Closure invoked once when the timer fires. ## Examples

def id [after 500 {||
    echo "fired!"
}]
# cancel before it fires:
[after-cancel $id]

## Returns Numeric timer id; pass to `after-cancel` to cancel. ## See Also `after-cancel`, `sleep`, `spawn`, `update`