diff options
| -rw-r--r-- | sly/signal.scm | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sly/signal.scm b/sly/signal.scm index 543f4d0..da4e1dc 100644 --- a/sly/signal.scm +++ b/sly/signal.scm @@ -48,6 +48,7 @@ signal-constant signal-count signal-tap + signal-timestamp signal-sample signal-delay signal-throttle @@ -309,6 +310,12 @@ SIGNAL. This signal is a convenient way to sneak a procedure that has a side-effect into a signal chain." (signal-map (lambda (x) (proc x) x) signal)) +(define (signal-timestamp signal) + "Create a new signal whose value is a pair, the car of which is the +time that the value of SIGNAL was received and whose cdr is the value +of SIGNAL." + (signal-map (cut cons (agenda-time) <>) signal)) + (define (signal-sample delay signal) "Create a new signal that emits the value contained within SIGNAL every DELAY ticks of the current agenda." |