[Macro]

(sv* object slot amount)

Scales the value of slot in object by amount, where slot is either the unquoted symbol or keyword name of a slot in object. Returns the scaled value.

Examples:

(define m (new midi :time 0 :duration 2 :keynum 60))

(sv* m :duration 2)
⇒ 4
(sv+ m :keynum 1/2)
⇒ 30

See also:

• fold-objects [Function]
• map-objects [Function]
• subobjects [Function]
• sv [Macro]
• sv+ [Macro]