HTML5 deployment: progress comes into sight

[Roland Huettmann]

Yes, I agree. Thanks a lot. ) Roland

On May 31, 2017 19:07, <jonathandlynch at gmail.com> wrote:

> A callback is not synchronous, his point was that it would be nice to
> communicate synchronously between LC and JS, rather than use complex
> callback chains.
>
> I agree with him, but I don't think there is a universal way to do that,
> just because some things in JavaScript, like rendering an image or using a
> webworker, are inherently asynchronous.
>
> Sent from my iPhone
>
> > On May 31, 2017, at 12:36 PM, Roland Huettmann via use-livecode <
> use-livecode at lists.runrev.com> wrote:
> >
> > @BR wrote: ... "What's very difficult, as you write in detail, are
> > "callbacks" for _synchronous_communication..."
> >
> > Callback functions?
> >
> > In my mind, a "callback" is always asynchronous -? Let us say in
> Javascript
> > - passing the function name and parameters of Javascript through LCS/LCB
> > and then somehow the result is put into a variable while I am continuing
> > processing other stuff. Maybe I am wrong? I am calling a server, waiting
> > for the result, but I could wait forever and the result will possibly
> never
> > come. So it would be blocking doing other things. A callback would free
> me
> > from waiting for nothing. Is this a right definition for "callback"?
> >
> > What defines "callback"? I could understand though that I am calling a
> > function in the browser widget (using the "callback" name of the
> function)
> > which will be executed through Javascript and will be returning a value
> for
> > further processing. What means "synchronous" or "asynchronous" in this
> > context?
> >
> > Again, in my mind, a callback is when I send off a parcel to my friend
> with
> > an instruction to tell me that it arrived and the confirmation of
> arrival.
> > The confirmation is the callback. Then I know my friend received the
> > parcel. Or in another analogy, I am calling someone by phone asking to
> call
> > me back. The person may call immediately or may call never or in a couple
> > of days. This is asynchronous.
> >
> > How would a callback become synchronous? Is it then still a "callback"?
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