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time: in NewTicker, document that the 1st tick comes after d

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Fixes #42245

Change-Id: I3b298ab6be65569389873d68bd3c6e49cf892c69
Reviewed-on: https://go-review.googlesource.com/c/go/+/265818
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
Trust: Alberto Donizetti <alb.donizetti@gmail.com>
This commit is contained in:
Alberto Donizetti 2020-10-28 10:48:17 +01:00 committed by Rob Pike
parent 041a4e4c34
commit bcfaeca58c
1 changed files with 6 additions and 5 deletions
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11
src/time/tick.go
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@ -13,11 +13,12 @@ type Ticker struct {
r runtimeTimer
}
// NewTicker returns a new Ticker containing a channel that will send the
// time with a period specified by the duration argument.
// It adjusts the intervals or drops ticks to make up for slow receivers.
// The duration d must be greater than zero; if not, NewTicker will panic.
// Stop the ticker to release associated resources.
// NewTicker returns a new Ticker containing a channel that will send
// the time on the channel after each tick. The period of the ticks is
// specified by the duration argument. The ticker will adjust the time
// interval or drop ticks to make up for slow receivers.
// The duration d must be greater than zero; if not, NewTicker will
// panic. Stop the ticker to release associated resources.
func NewTicker(d Duration) *Ticker {
if d <= 0 {
panic(errors.New("non-positive interval for NewTicker"))