Problem with Series Lazy Evaluation

[Christian Paz]

I had an error inmersed into a estimation system that brings an unexpected error the first time compiled, and the second time the error did not happen.

Then, I discovered that when series are not "forced" to exist, the same code can result in different values. For example:

Code to change dating and getting the last not null date of the transformed serie
Serie um_diario = SubSer(Rand(0,1, Diario), y2006m01, y2007m02 );
Serie um=Do(DatCh(um_diario, Semanal, SumS));
Date x=Last(um);

Matrix OOO = SerMat(um);
Serie dos = MatSerSet(OOO, Dating(um), First(um))[1];

Date y=Last(um);
Text If(x!=y, WriteLn("Last was "+FormatDate(x)+" and now it is "+FormatDate(y)));

I expected x==y because um did not change in the middle of these two sentences.

Even TOL is Lazy, the moment when I do a "Last", the serie should be evaluated. Also see that in um creation a Do sentence is used.

Thanks in advance.
Christian

[Víctor de Buen Remiro]

I've tested the code with old versions and it worked as you are expecting until version TOL 1.1.3 and has the observed behaviour on 1.1.6 from 1.1.4

I will see if it's possible to recover old version way.

Thanks to report it

[Víctor de Buen Remiro]

Sorry, problem was solved som weeks ago bu I didn't remember to notify here