18 lines
463 B
Racket
18 lines
463 B
Racket
(module lang frtime/lang-utils
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(require frtime/lang-ext)
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(require (as-is:unchecked frtime/core/frp
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event-set? signal-value))
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(define (value-nowable? x)
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(or (not (signal? x))
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(not (event-set? (signal-value x)))))
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(define ((behaviorof pred) x)
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(let ([v (value-now x)])
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(or (undefined? v)
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(pred v))))
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(provide value-nowable? behaviorof
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(all-from frtime/lang-utils)
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(all-from-except frtime/lang-ext lift)))
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