+= not working when adding a collection; := not working too

[dvojtise]

related to #30

the += operator does not seem to work when adding a collection to a collection
the := operator does not seem to accept to replace the content of a collection by another collection

cf.

[dvojtise]

add project to reproduce the issue

ale-lang-issue-33.zip

[echebbi]

Looks like the issue is now fixed. The following code shows no error and prints 12345678 when run:

behavior helloworld;

open class HelloWorld {

    @main
    def void run() {
        Sequence(Integer) ints := Sequence{};
        Sequence(Integer) ints1 := Sequence{1, 2, 3};
        Sequence(Integer) ints2 := Sequence{5, 6, 7, 8};
        ints := ints1;
        ints += 4;
        ints += ints2;
		
        ('' + ints).log();
    }
}

Likely fixed by PR #69.