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Postings from October 2021
On Thu, Oct 14, 2021 at 11:18:42AM +0100, Paul LeoNerd Evans wrote: > The suggested next steps here involve creating a long list of "test > cases"; situations involving performing various kinds of operations on > values/variables, and specifying what are the properties of results, > and side-effects on variables within it. Likely many of these > properties will take the form of "appears to be a string" or "appears > to be a number" or similar. > > These test cases would suggest the form of an `XS::APItest`-like `.t` > file which can live in Perl core, containing all the tests. Most > critically it would require defining a new API to ask questions of the > form "appears to be (some sort of data shape)" about the SVs. For > instance, while the recent "stable-bools" branch added `SvIsBOOL()` > there aren't similar test functions for other value shapes like strings > and numbers. So that would need thinking about somehow. While I daren't suggest that I've got it right, this might be a good place to start as it looks at all kinds of weird edge-cases: https://metacpan.org/release/DCANTRELL/Scalar-Type-0.1.2/source/t/all.t although given the current limitations, those tests are aimed at divining whether we can accurately represent a value as a number (or as an int) as opposed to whether it was originally a number/int. -- David Cantrell | Reality Engineer, Ministry of Information European immigration: making Britain great since AD43Thread Previous | Thread Next