On 2016-02-10 18:06, Tiemo Hollmann TB wrote:
Bonsoir Thierry,
ui, thats fancy. I haven't seen yet a function which changes input
parameter as a kind of result
This is actually quite a rare pattern in the engine (when exposed as
function type syntax at least)... However, user handlers can obviously
do this with the use of the '@' symbol:
command returnMoreThanOneValue pInput, @rOutput1, @rOutput2
put item 1 of pInput into rOutput1
put item 2 of pInput into rOutput2
end returnMoreThanOneValue
(This works for on, command, function and private variants too).
If you prepend your parameter with @ then that handler must be called
with something which looks like a variable, and in that case the
variable itself is passed to the handler, rather than the variable's
value.
Prior to 7 you could only use actual variables in such parameters, but
from 7 you can use array elements too. i.e.
returnMoveThanOneValue "1,2", tArray[1], tArray[2]
Will work.
Mark.
--
Mark Waddingham ~ m...@livecode.com ~ http://www.livecode.com/
LiveCode: Everyone can create apps
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