Dear all,
I have a use case in which I need to override the `toString` method of a
custom List class and use it when interpolating that list object in a
GString.
It turns out the Groovy uses its own formatting methods for List and other
structures, so the my custom `toString` is simply ignored.
To explain it better take in consideration this example:
class MyList extends ArrayList {
String toString() {
this.join('-')
}
}
def x = new MyList()
x << 1 << 2 << 3
assert x.toString() == '1-2-3'
assert "$x" == '1-2-3'
Assertion failed:
assert "$x" == '1-2-3'
| |
| false
[1, 2, 3]
The second assertion fails for the reason said above. Now I'm wondering it
there's any way to override somehow the GString default rendering mechanism
in such a way I can inject my own formatting rule for my custom class.
Any suggestion is appreciated.
Cheers,
Paolo
