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Capturing environment associated with a promise

Hadley Wickham 
Hi all,

It's possible to capture the expression associated with a promise
(using substitute). Is there any way to capture the environment
associated with a promise?  Similarly, is there any way to tell if
something is a promise without accidentally evaluating it?

Thanks!

Hadley

Thread (6 messages)

Hadley Wickham Capturing environment associated with a promise Oct 8 Duncan Murdoch Capturing environment associated with a promise Oct 8 Luke Tierney Capturing environment associated with a promise Oct 8 Gabor Grothendieck Capturing environment associated with a promise Oct 8 Hadley Wickham Capturing environment associated with a promise Oct 9 Hadley Wickham Capturing environment associated with a promise Oct 9