Setting hidden of lines very slow

J. Landman Gay jacque at hyperactivesw.com
Sat Dec 1 22:26:36 EST 2018


Right, and accessing a field is one of the most expensive operations in LC.

Maybe Richard will post his analogy to the maintenance worker again. I 
found it both amusing and informative.

--
Jacqueline Landman Gay | jacque at hyperactivesw.com
HyperActive Software | http://www.hyperactivesw.com
On December 1, 2018 8:18:52 PM Tom Glod via use-livecode 
<use-livecode at lists.runrev.com> wrote:

> So the first form populates the field only once....since its a single
> command so no other states of the field will exist.
>
> Makes perfect sense.
>
> Thanks
>
> On Sat, Dec 1, 2018 at 7:45 PM Richard Gaskin via use-livecode <
> use-livecode at lists.runrev.com> wrote:
>
>> Tom Glod wrote:
>>
>>  > Can someone explain the seemingly extraordinary performance
>>  > improvement in using apparently its "split second" vs "over a minute"
>>  >
>>  > set the hidden of line 1 to - 1 of field 1 to false
>>  >
>>  > vs.
>>  >
>>  > repeat with i = 1 the number of lines of fld 1
>>  >       set the hidden of line i of fld 1 to false
>>  > end repeat
>>  >
>>  > it doesn't seem like the loop would be the bottleneck here, but rather
>>  > the work on the field itself....but obviously, I know nothing about
>>  > this engine
>>
>> Think about all the steps a computer needs to take to render text in a
>> field.
>>
>> Multiply that by the number of lines...
>>
>> --
>>   Richard Gaskin
>>   Fourth World Systems
>>   Software Design and Development for the Desktop, Mobile, and the Web
>>   ____________________________________________________________________
>>   Ambassador at FourthWorld.com                http://www.FourthWorld.com
>>
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