compound name with variable

[pascalh4]

Hello to all,

I have a small question about the names with variable.

if I write these lines of code, the stack disappears after renaming. It's ok.

Code: Select all

on mouseUp      
   set the name of stack "F0" to "F2"
   hide stack "F2"
end mouseUp

or

 ask "donner un titre"
   put it into Nvar
   set the name of stack "F0" to Nvar  
 hide stack Nvar

If I introduce the variable to create a compound name, the following code does not work.

Code: Select all

 ask "donner un titre"
   put it into Nvar
   set the name of stack "F0" to "F0" & "  " &  Nvar 
   hide stack  "F0" & "  " &  Nvar 

where is my mistake?

Pascal

[bangkok]

Code: Select all

ask "donner un titre"
   put it into Nvar
   set the name of stack "F0" to "F0 " &  Nvar
   hide stack  ("F0 " &  Nvar)

[Klaus]

Hi Pascal,

what the verbose Mr. bangkok wanted to express , is that you MUST ALWAYS put parens
around ANY "compound" name to make the engine recognize the correct "compound" string!
...
ask "donner un titre"
if it = empty then exit to top
##

put it into Nvar
set the name of stack "F0" to ("F0 " & Nvar)
hide stack ("F0 " & Nvar)
...

Best

Klaus

[bangkok]

Sorry, not really verbose indeed. Too tired Will do better next time.

[pascalh4]

Thank you both.

I found an alternative, but it was complicated and can be dangerous for the rest of the code.

Code: Select all

 ask "donner un titre"
   put it into Nvar
   set the name of stack "F0" to "F0" & Nvar
   put "F0" & Nvar into NCvar
   hide stack NCvar

Your information allows me to be more concise and certainly more accurate.

Soon
Pascal

[Klaus]

...
ask "donner un titre"
put it into Nvar
set the name of stack "F0" to ("F0" & Nvar)
put "F0" & Nvar into NCvar
hide stack NCvar
...

[pascalh4]

Hi Klaus

You implies that it's even better with the parentheses. That's it?

By cons, set a variable to another variable is a correct action or not?

And can it be done at several levels?

Pascal

[Klaus]

Bonjour Pascal,

You implies that it's even better with the parentheses. That's it?

Not better, but CORRECT!

Please get used to it in your own interest, if not, it will "bite" you when you least exspect it!

By cons, set a variable to another variable is a correct action or not?

Yes.

And can it be done at several levels?

Sorry, don't understand?


Best

Klaus

[pascalh4]

hi Klaus

Sorry, don't understand?

a variable in a variable, in a variable,in ....

Are there limits?



Another quick question for the variables.

Should we place a variable at a specific location, so that it is recognized everywhere. (recognized by several buttons for example)

Pascal

[Klaus]

Hi Pascal,

hi Klaus

Sorry, don't understand?

a variable in a variable, in a variable,in ....
Are there limits?

You mean something like:
...
put 10 into tVarA
put tVarA into tVarB
put tVarB into tVarC
...
?
Then no limits

Should we place a variable at a specific location, so that it is recognized everywhere.
(recognized by several buttons for example)

This is not a question of "etiquette" or something what you should or should not do, but a question of neccessity!
If you NEED the variable to be available in many objects, make the variable GLOBAL,
or LOCAL if the script permits this.

Best

Klaus

[pascalh4]

Hi,

How to, global variable?

I read the explanations in the dictionary, but I did not understand the method.

In my project:
Action of first button

Code: Select all

  create stack "S0" 
   set the loc of stack "S0" to (450,300)
   ask "donner un titre"
   if it=empty then exit to top
   put it into Nvar
   set the name of stack "S0" to ("S0" & "  " &  Nvar)

Pascal

Action of second button

Code: Select all

 hide button "Nouvelle Fiche"
   show button "Sauver la fiche"
      put ("S0" & "  " &  Nvar) into tvar
   put char 2 of  tvar into tNum
   add 1 to tNum   
   create stack ("S" & tNum & "  " & Nvar) in stack ("S0" & "  " &  Nvar)

Problem: the stack ("S0" & " " & Nvar) is not recognized in the second button action.
I tried to put "Global Nvar" in different places, but without success. This is Nvar that the variable problem (apparently), because replacing it with a defined value (eg aa) everything works fine.

[Klaus]

Hi Pascal,

you need to declare a global variable in EVERY script you want to use it!

Example:
1. A button with only one handler:

Code: Select all

on mouseup
  global gGlobalVar
  put 10 into tGlobalVar
end mouseup

2. In a stack script or any script with more than one handler you can declare it at the top of the script:

Code: Select all

global tGlobalVar
## Now it is avaliable in any handler in this script!

on openstack
   put empty into gGLobalVar
   ## more openstack stuff here...
end openstack

command your_custom_handler
    if gGlobalVar = empty then
       ## whatever ...
   end if
end your_custom_handler

Best

Klaus

P.S.
Please also see my answer to the "substack without mainstack" mystery
http://forums.runrev.com/phpBB2/viewtop ... 021#p85610

[pascalh4]

sorry I don't understand the declaration.

Code: Select all

global tGlobalVar
## Now it is avaliable in any handler in this script!

here Ok

Code: Select all

on openstack
   put empty into gGLobalVar
   ## more openstack stuff here...
end openstack

here, why empty?

Code: Select all

command your_custom_handler
    if gGlobalVar = empty then
       ## whatever ...
   end if
end your_custom_handler

and here, I don't understand the command.

1) In my event, it would have to recognize the order that I placed in the script of the first button:

Code: Select all

ask "donner un titre"
   if it=empty then exit to top
   put it into Nvar

the answer comes after a click of button. the script is in the code of this button. Should there be a link to "command".

2) the terms "your_custom_handler" and "tGlobalVar" are generic terms. In my event, I can keep the term Nvar (right?)



I tried this in the code mainstack

Code: Select all

global Nvar
on preopenstack
   ask "donner un titre"
   if it=empty then exit to top
   put it into Nvar
   set the loc of stack "Outils de création" to (450,650)
end preopenstack

but it displays Nvar instead of response text, in the name.

Pascal

[Klaus]

Hi Pascal,

mon dieu, of course that were nothing but examples on how to declare and use a global variable!

2) the terms "your_custom_handler" and "tGlobalVar" are generic terms. In my event, I can keep the term Nvar (right?)

Exactement

I tested this with a mouseup script:

Code: Select all

global Nvar
on mouseup
     ask "donner un titre"
     if it=empty then exit to top
     put it into Nvar

     ## Hint: Do not put parens around a LOC or RECT
     ## set the loc of stack "Outils de création" to 450,650
     answer Nvar
end mouseUp

Worked as exspected.


Best

Klaus

[pascalh4]

Hi Klaus

I understood that.
Moreover(for one button action) there is no need for "global". Right?
But for my needs, the answer should be given with a second button.


A big thank you.
your explanation made ​​me understand that it was necessary to declare the variable in all actions

In fact, does it exist a place, so that only one variable declaration affects all actions.
I tried to put it in the code of the stack with "preopenstack" but it does not work.

Thanks to you my little project begins to take shape. And I begin to understand LC more easily.

Soon

Pascal