time[syntax] time exp
ChezScheme, Chicken, STk, Gauche: evaluates exp and reports the amount of execution statistics.
For ChezScheme: see also display-statistics.
[syntax] time exp1 exp2 ...
STklos: allows multiple exps.
[procedure] time [iterations] exp
SISC: may take optional iterations.
[procedure] time [date]
Scsh: without args, returns the current time.
With date record, converts it to time.
SRFI-19 has current-time and date->time-utc.
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