[fpc-devel] for .. in documentation and classes based iterators.

Marco van de Voort fpc at pascalprogramming.org
Tue Sep 3 12:04:28 CEST 2019

I did an initial patch to add for..in iterator support in fcl-stl 
ghashmap (https://bugs.freepascal.org/view.php?id=35940)

I've looked at the docs of for..in, and it doesn't seem to name the 
delphi getenumerator() method in its options. I assume it is equal to 
point 5, the enumerator operator, because a for..in this way doesn't 
cause a memory leak.

"5. Any type for which an enumerator operator is defined. The enumerator 
operator must return a structured type that implements the IEnumerator 
interface. The type of the control variable’s type must equal the type 
of the enumerator’s GetCurrent return value type."

but maybe that could be said more explicitly?

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