Roger. 

On Thu, Sep 01, 2022 at 02:04:53PM +0000, Andy Little via Discuss wrote: > 7. You can also instantiate the module into the CSG tree of course, > using the existing function call syntax as with any other module You mean a function call of the variable name ? t = module cube([1,2,3]); t(); I think I can now do: module t (sz) { cube (sz); } t = 13; echo (t); t(10); Roger. -- ** R.E.Wolff@BitWizard.nl ** https://www.BitWizard.nl/ ** +31-15-2049110 ** ** Delftechpark 11 2628 XJ Delft, The Netherlands. KVK: 27239233 ** f equals m times a. When your f is steady, and your m is going down your a is going up. -- Chris Hadfield about flying up the space shuttle.

You have created a module named t and a variable named t. You can still do that. With the module_alias No existing code breaks is broken.
however if you do:
//--------
t=1;
t = [1,2,3];
t = "hello";

t = module cube([1,2,3]); // No instantiation of cube([1,2,3]) into the CSG tree
//------------------

you will get warnings
WARNING: t was assigned on line 1 but was overwritten in file build, line 2
WARNING: t was assigned on line 1 but was overwritten in file build, line 3
WARNING: t was assigned on line 1 but was overwritten in file build, line 4

That is existing openscad behaviour however

If you want to really confuse you can also do 
cube = module cube([a,b,c]);
cube();  // instantiate a cube([1,2,3]) into the CSG tree
function cube() = module cube();
cube();  // instantiate a cube([1,2,3]) into the CSG tree
cube1 = cube();

I'll leave you to figure out what that actually means!

Rogier Wolff wrote: > On Thu, Sep 01, 2022 at 02:04:53PM +0000, Andy Little via Discuss wrote: > > > 7. You can also instantiate the module into the CSG tree of course, > > using the existing function call syntax as with any other module > > You mean a function call of the variable name ? > Nope I mean “instantiate the module into the CSG tree, using the existing function call syntax as with any other module” > > t = module cube(\[1,2,3\]); t(); > > I think I can now do: > > module t (sz) > { > cube (sz); > } > > t = 13; > > echo (t); > t(10); > > ``` > You have created a module named t and a variable named t. You can still do that. With the module_alias No existing code breaks is broken. > however if you do: > //-------- > t=1; > t = [1,2,3]; > t = "hello"; > > t = module cube([1,2,3]); // No instantiation of cube([1,2,3]) into the CSG tree > //------------------ > > you will get warnings > WARNING: t was assigned on line 1 but was overwritten in file build, line 2 > WARNING: t was assigned on line 1 but was overwritten in file build, line 3 > WARNING: t was assigned on line 1 but was overwritten in file build, line 4 > > That is existing openscad behaviour however > > If you want to really confuse you can also do > cube = module cube([a,b,c]); > cube(); // instantiate a cube([1,2,3]) into the CSG tree > function cube() = module cube(); > cube(); // instantiate a cube([1,2,3]) into the CSG tree > cube1 = cube(); > > I'll leave you to figure out what that actually means! > > > > ```