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Postings from September 2023
Dave Mitchell writes: > On Sun, Sep 03, 2023 at 01:28:08PM +0300, Ivan Vorontsov wrote: >> Maybe genuine optional parameters must be only the ones marked by = >> sign. Others are mandatory. To mandatory parameters with //= or ||= >> operators, that are last in the list or precede optional ones with =, >> undef values are assigned, if there are less arguments than mandatory >> parameters, and then operator works with that value. > > I think that that's complex and confusing. You're basically saying > > f($x, $y = 1, $z = 2) # $y is optional parameter > f($x, $y //= 1, $z = 2) # $y is optional parameter IMHO the only sensible interpretation of that syntax (given what it does elsewhere) would have been "$y is a mandatory parameter that gets a value of 1 (or whatever expression in that place) when passed an undef" (and the same for "||=" when passed something that evaluates to "false"). Optionality should have been strictly assigned by plain "=". Of course think something like $y //= "undef" = "default" would have been subject to lengthy discussion, both on whether it should even be there and what exactly it does. Regards, Achim. -- +<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+ Factory and User Sound Singles for Waldorf rackAttack: http://Synth.Stromeko.net/Downloads.html#WaldorfSoundsThread Previous | Thread Next