I've pinged the spec author to make it clear in the spec. What is meant in the spec is really that we want Blob.slice to have the same exact behavior as Array.slice defined in ECMAScript 5, 15.4.4.10. That is, Blob.slice(start) has the same result as Blob.slice(start, undefined).
The current code generator scripts will convert undefined value to 0. But we really want to use the custom default value for Blob.slice. Do we want to consider adding "DefaultValue=" extended attribute support to IDL? Thanks, Jian On Thu, Apr 21, 2011 at 3:38 AM, Maciej Stachowiak <m...@apple.com> wrote: > > On Apr 21, 2011, at 12:14 AM, Jian Li wrote: > > > The current File API spec says that: > > If the end parameter is not provided (undefined), let relativeEnd be > size. > > That seems like loose wording. Parameter not provided and parameter > provided with a value of undefined are in general not the same thing. The > spec should be explicit about which cases it's talking about. > > Regards, > Maciej >
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