[Pharo-users] accessing local/instance variables with metalinks

Dec. 5, 2016

      Hi,

what is the best way to access variables from within a metalink?

for example I have a message send `surface clear` and I want to change it to `surface clear: trachelCanvas color`.

I can use #instVarNamed:

```
MetaLink new
	metaObject: [ :object |
		(object instVarNamed: #surface) clear: (object instVarNamed: #trachelCanvas) color.
	];
	selector: #value:;
	arguments: #(object);
	control: #instead.
```

but the above isn't exactly nice, plus it wouldn't work with temporary variables.

Thanks,
Peter

[Pharo-users] accessing local/instance variables with metalinks

Peter Uhnak