[OE-core] some simple questions about assignment and appending

Robert P. J. Day rpjday at crashcourse.ca
Tue Jun 19 20:49:18 UTC 2012

On Tue, 19 Jun 2012, Paul Eggleton wrote:

> On Tuesday 19 June 2012 12:28:22 Robert P. J. Day wrote:
> >   finally, what are the evaluation mechanics of the "?=" operator?
> ?= is the same as = except that it only sets the value if it is not
> already set at the time the line is parsed.

  just so i don't come across as a total idiot, i did understand that
"?=" is a conditional assignment -- my question was whether it had
immediate evaluation semantics like ":=" or delayed evaluation
semantics like "=", and you appear to have answered that.  thanks.



Robert P. J. Day                                 Ottawa, Ontario, CANADA

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