Upgrading a codebase from 2.065 to 2.066

[bearophile via Digitalmars-d]

Brian Schott:

> I recently upgraded EMSI's internal data processing library[1] 
> so that it will be compatible with the upcoming 2.066 release 
> and thought it might be useful to share my experience.

I suggest to update large programs more frequently than adjacent 
compiler versions, because there is too much changed stuff.


> 5. A change to object.d broke a line of code that used "[]" as 
> the "defaultValue" argument to the get() function for AAs. 
> Casting "[]" to the expected type worked around this issue.

Indeed this doesn't compile, but perhaps it should:

void main() {
     int[][int] aa;
     int[] r = aa.get(0, []);
}


A current workaround (but it's not DRY, because 'aa' is repeated 
twice):

void main() {
     import std.traits: ValueType;
     int[][int] aa;
     int[] r = aa.get(0, ValueType!(typeof(aa)).init);
}

Bye,
bearophile