Subject: From: Date:

Re: [ECS] IF, THEN, ELSE....OR MAYBE NOT? Mark Gilmore Wed, 15 Nov 2000 09:03:18 -0500

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DOs ALWAYS execute (unless contained in a "false" BEGINIF block).
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Mark Gilmore
Omnipotence (ECS home automation software)
http://omnipotencesoftware.com
423-745-0026
Hours: Mon-Sat, 9AM-8PM/EST


Kevin Trainor wrote:
> 
> Thanks for your advice.
> 
> Two questions:
> 
> 1.   Are DO's and THEN's interchangeable?  They seem to be in your example.
> 
> 2.  How do you represent a block of statements that are to be executed in
> the ELSE case?  Are ELSE and DO interchangeable?
> 
> Kevin
> ----- Original Message -----
> From: <bgprager@mindspring.com>
> To: <ecs-list@netbloc.com>
> Sent: Wednesday, November 15, 2000 7:26 AM
> Subject: Re: [ECS] IF, THEN, ELSE....OR MAYBE NOT?
> 
> > Take heart,  they do work.
> > If you're imbedding If's within If's,  use beginIF
> > BeginIF A is true
> > DO ----common code----
> > If B is true
> > then
> > then
> > then
> >     elseif C is true
> >     then
> >     then
> > ENDIF
> >
> > Alternatively,
> > If A is true
> >
> > BEGINIF  B is true
> > Do
> > Do
> > Do
> > If  D is true
> > then
> > then
> > ENDIF
> >
> > BEGINIFs are very useful and provide the means to easily nest mutilple IF
> statements and can preclude of use of the Exit statement (if you're an
> oldtime programmer like me, Exit's were death.). It is also useful when
> combining ANDs and ORs in a logical statement.  I will admit the ECS is
> harder than other HA software I've used when constructing complex logical
> conditions however I used the BeginIF statement to break up a complex
> logical.  Ex.  If (A or B) and C becomes :
> > Beginif A is true or B is true
> > If C is true then
> > then
> > ....
> > endif
> > My Thermostat code is heavily nested as are some of my other routines and
> they work quite reliably. If you'd like to see some examples, let me know.
> > Good Luck.
> > ecs-list@netbloc.com wrote:
> > >
> >
> >
> >
> >
> >
> >
> > All:
> >
> > When you can't even make the IF-AND-ELSE statements work in a
> > language, I think you should generally be regarded as a failure. Such is
> > my fate with ECS. Oh, I've tried to make them work. And, some
> > have. I've had especially good luck with the simple IF-THEN
> > construct. I have even had some luck with your basic IF-THEN-ELSEIF
> > construct. But, as soon as I try to do something complex, the event goes
> > right into the toilet.
> >
> > I've tried looking at the event code that comes with
> > ECS. And, suspiciously, I can't find any examples of IF-THEN-ELSE
> > constructs that are more complex than the ones that I described above. The
> > proud programmer in me suspects that perhaps even Mark can't get the
> complex
> > ones to run right. But, the humble programmer in me says that I
> > probably am just not getting the language syntax and that it's all my
> > fault.
> >
> > So, on to my questions:
> >
> > 1. What is the proper way to code a block of
> > statements to be executed in the ELSE case? Is
> > it:
> >
> > if condition
> > then statement 1
> > then statement 2
> > else statement 3
> > else statement 4
> > else statement 5
> >
> > or perhaps is it:
> >
> > if condition
> > then statement 1
> > then statement 2
> > else statement 3
> > do statement 4
> > do statement 5
> >
> > 2. When expressing conditions using AND / OR, can you
> > create a complex statement that would normally be created using paretheses
> in
> > more robust languages? Are there rules that determine the order of
> > precedence? If not, how do people create complex conditionals in
> > ECS?
> >
> > 3. Can you use an ELSEIF within a BEGINIF-ENDIF
> > block?
> >
> > 4. I have the same question about coding blocks of
> > statements for the ELSE case as it applies to BEGINIF-ENDIF. Do all
> > statments within the ELSE case begin with ELSE?
> >
> > 5. Are there limits to how deeply IF-THEN-ELSE
> > statements can be nested?
> >
> > 6. WHY DOESN'T MY CODE EVER DO WHAT I EXPECT IT TO
> > UNLESS I MAKE IT SO REPETITIVE AND TEDIOUS THAN I FALL ASLEEP CODING
> > IT?
> >
> > Well...Now that I have all that off my chest, I would like to
> > ask for your help. If you have had these kinds of problems and found your
> > way through, I would appreciate your advice.
> >
> > Thanks in advance.
> >
> > Kevin
> >
> > >
> > >
> >
> >

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