[Issue 11346] [2.064 beta] field initializing not allowed in loops or after labels

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=11346



--- Comment #3 from Kenji Hara <k.hara.pg at gmail.com> 2013-10-25 00:10:47 PDT ---
(In reply to comment #2)
> That is so non intuitive. A good example how you can make simple code more
> complicated. I will wait for the threads in D.learn or possible bug reports for
> that...

If multiple initialization for non-mutable field is allowed, it could break
type system. For example:

struct S {
    const int[] arr;
    this(immutable int[] a) {
        arr = a;     // First initialization
        arr[0] = 1;  // Second initialization - modify immutable data!
    }
}

Therefore, it's necessary limitation.

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