[Pas2js] Built-in helper methods for Double type

[Mattias Gaertner]

On Wed, 11 Sep 2019 21:22:43 +0200
Sven Barth via Pas2js <pas2js at lists.freepascal.org> wrote:

>[...]
> > Iff there would be a modifier or attribute to define a read only
> > type helper method, the compiler could create shorter code.  
> 
> Considering that Delphi is using attributes for most such things as
> well (WeakRef, Volatile, etc.) you could add a magic
> "SelfIsConstAttribute" or something like that...

Yes. Probably something shorter like [ConstSelf].

 
>[...]
> Couldn't external [methods] be considered as "const" anyway? Or
> can JS code modify "this"?

AFAIK JS cannot modify the outer "this".
External methods of a helper for base types (e.g. double) is not yet
implemented. It would probably work the same as for external classes,
that is "value.toString" is converted to "value.toString()".


Mattias