[fpc-pascal] How are Assigned, Free, Nil and Destroy related?

Marco van de Voort marcov at stack.nl
Sat Oct 22 13:03:14 CEST 2011

In our previous episode, Felipe Monteiro de Carvalho said:
> Nil is not a routine, it is a value, it means that the object is
> empty, it does not exist / is not allocated. Nil in existing
> implementations that I know is represented by the value zero.

Look better in, euh, Free Pascal, and see what is assigned in this case:-)

type txxxx = procedure (a,b:integer) of object;
var x : txxxx;

nil is not always zero. Sometimes it is double zero :-)

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