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Re: IndexedDB: undefined parameters

From: Alec Flett <alecflett@chromium.org>
Date: Tue, 9 Oct 2012 11:37:36 -0700
Message-ID: <CAHWpXeb3_=5cO1jMjbS5xi6UzKhu3gKqBsj8vrkWq4NcADwJPw@mail.gmail.com>
To: Boris Zbarsky <bzbarsky@mit.edu>
Cc: public-webapps@w3.org
On Tue, Oct 9, 2012 at 11:12 AM, Boris Zbarsky <bzbarsky@mit.edu> wrote:

> On 10/9/12 1:52 PM, Joshua Bell wrote:
>
>> The IDB spec does not have [TreatUndefinedAs=Missing] specified on
>> openCursor()'s arguments (or anywhere else), so I believe Chrome's
>> behavior here is correct.
>>
>
> It looks correct as the spec is currently written.
>
> It's not clear to me why the spec is written the way it is.  It could just
> as easily define that if the "any" value is undefined, it's ignored.  Or it
> could use [TreatUndefinedAs=Missing], indeed.


I have to say, as a developer it can be really frustrating to write
abstractions on top of APIs that behave this way, when you want to say
something like:

var direction;
 var range;

if (condition1)
   direction = 'prev';
else if (condition2)
   direction = 'prevuniq';

if (condition3) {
  range = range1;
else if (condition4)
  range = range2;

return source.openCursor(range, direction);

Alec
Received on Tuesday, 9 October 2012 18:38:36 GMT

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