SexScripts :: View topic - calling closures

calling closures	unnamed007 [ Mon Oct 01, 2018 10:11 pm ]
I'm having issues with closures/"methods" in groovy. The way they don't let you call them unless they're already defined is highly upsetting. Code: def pageOne = { show("You are on page one."); pageTwo() } def pageTwo = { show("You are on page two."); } pageOne() The above code will not work because I'm calling pageTwo before it's defined. If I moved it around, it would work fine. Code: def pageTwo = { show("You are on page two."); } def pageOne = { show("You are on page one."); pageTwo() } pageOne() But then what if I want to go to page one again? Code: def pageTwo = { show("You are on page two."); pageOne() } def pageOne = { show("You are on page one."); pageTwo() } pageOne() Then it's an issue again. I tried going around it by having a dynamic method, such as Code: def goToPage = { page -> switch (page) { case 0: break; case 1: show("You are on page one.") break; case 2: show("You are on page two.") break; } } goToPage(1); And this works fine, until you want to switch pages from within the page closure. Code: def goToPage = { page -> switch (page) { case 0: break; case 1: show("You are on page one.") goToPage(2); break; case 2: show("You are on page two.") break; } } goToPage(1); after some fumbling about, this is a solution that I found, but it's extremely cumbersome. Code: def pageToGoTo = 1; def pagesEnded = false; def goToPage = { page -> switch (page) { case 0: break; case 1: showButton("You are on page one.") pageToGoTo = 2; break; case 2: showButton("You are on page two.") pageToGoTo = 3; break; case 3: showButton("You are on page three.") pageToGoTo = 1; break; } } def pageNav = { while (!pagesEnded) { goToPage(pageToGoTo); } } pageNav() In the end, I will make do with what I can come up with, but I'm curious how other script writers tackled this, or if doti himself has any ideas. Basically, I'd like to be able to declare a closure, basically promising the compiler that it's defined somewhere, and then it allowing me to use it even before its defined. I don't mess with groovy outside of sexscripts, so I'm not sure if using methods instead of closures will help, I suspect it would, but the compiler does not let me use methods in the script, I assume it's a security thing? (doti?) method attempt Code: def static doWhatever () { // doing stuff } comes up with Code: script15384246411491261545393.groovy: 42: Method definition not expected here. Please define the method at an appropriate place or perhaps try using a block/Closure instead. at line: 42 column: 3. File: script15384246411491261545393.groovy @ line 42, column 3. def static doWhatever () { ^ 1 error

calling closures

unnamed007 [ Mon Oct 01, 2018 10:11 pm ]

I'm having issues with closures/"methods" in groovy. The way they don't let you call them unless they're already defined is highly upsetting.

Code:

def pageOne = {
   show("You are on page one.");
   pageTwo()
}

def pageTwo = {
   show("You are on page two.");
}

pageOne()

The above code will not work because I'm calling pageTwo before it's defined. If I moved it around, it would work fine.

Code:

def pageTwo = {
   show("You are on page two.");
}

def pageOne = {
   show("You are on page one.");
   pageTwo()
}
pageOne()

But then what if I want to go to page one again?

Code:

def pageTwo = {
   show("You are on page two.");
   pageOne()
}

def pageOne = {
   show("You are on page one.");
   pageTwo()
}
pageOne()

Then it's an issue again.

I tried going around it by having a dynamic method, such as

Code:

def goToPage = {
   page ->
   
   switch (page) {
      case 0: 
         break;
      case 1:
         show("You are on page one.")
         break;
      case 2:
         show("You are on page two.")
         break;
   }
}

goToPage(1);

And this works fine, until you want to switch pages from within the page closure.

Code:

def goToPage = {
   page ->
   
   switch (page) {
      case 0: 
         break;
      case 1:
         show("You are on page one.")
         goToPage(2);
         break;
      case 2:
         show("You are on page two.")
         break;
   }
}

goToPage(1);

after some fumbling about, this is a solution that I found, but it's extremely cumbersome.

Code:

def pageToGoTo = 1;
def pagesEnded = false;

def goToPage = {
   page ->
   
   switch (page) {
      case 0: 
         break;
      case 1:
         showButton("You are on page one.")
         pageToGoTo = 2;
         break;
      case 2:
         showButton("You are on page two.")
         pageToGoTo = 3;
         break;
      case 3:
         showButton("You are on page three.")
         pageToGoTo = 1;
         break;
   }
}

def pageNav = {
   while (!pagesEnded) {
      goToPage(pageToGoTo);
   }
}

pageNav()

In the end, I will make do with what I can come up with, but I'm curious how other script writers tackled this, or if doti himself has any ideas.

Basically, I'd like to be able to declare a closure, basically promising the compiler that it's defined somewhere, and then it allowing me to use it even before its defined. I don't mess with groovy outside of sexscripts, so I'm not sure if using methods instead of closures will help, I suspect it would, but the compiler does not let me use methods in the script, I assume it's a security thing? (doti?)

method attempt

Code:

def static doWhatever () {
   // doing stuff
}

comes up with

Code:

script15384246411491261545393.groovy: 42: Method definition not expected here. Please define the method at an appropriate place or perhaps try using a block/Closure instead. at line: 42 column: 3. File: script15384246411491261545393.groovy @ line 42, column 3.
         def static doWhatever () {
     ^

1 error

Re: calling closures	doti [ Tue Oct 02, 2018 10:39 am ]
You only need to declare before, not to define. This works : Code: def pageOne, pageTwo pageOne = { show("You are on page one."); pageTwo() } pageTwo = { show("You are on page two."); } pageOne()

Re: calling closures

doti [ Tue Oct 02, 2018 10:39 am ]

You only need to declare before, not to define. This works :

Code:

def pageOne, pageTwo
pageOne = {
   show("You are on page one.");
   pageTwo()
}

pageTwo = {
   show("You are on page two.");
}

pageOne()

Re: calling closures	unnamed007 [ Tue Oct 02, 2018 12:15 pm ]
doti wrote: You only need to declare before, not to define. This works : Code: def pageOne, pageTwo pageOne = { show("You are on page one."); pageTwo() } pageTwo = { show("You are on page two."); } pageOne() That's exactly what I needed. Thank you doti.

Re: calling closures

unnamed007 [ Tue Oct 02, 2018 12:15 pm ]

doti wrote:

You only need to declare before, not to define. This works :

Code:

def pageOne, pageTwo
pageOne = {
   show("You are on page one.");
   pageTwo()
}

pageTwo = {
   show("You are on page two.");
}

pageOne()

That's exactly what I needed. Thank you doti.


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