Free functions are much less discoverable. Think about the code completion, for example.
> On Feb 22, 2017, at 6:01 AM, David Sweeris <[email protected]> wrote: > > > On Feb 21, 2017, at 20:46, Xiaodi Wu via swift-evolution > <[email protected] <mailto:[email protected]>> wrote: > >> Sign, perhaps, can be thought of as "part of a number," but signum refers to >> the signum function (http://en.wikipedia.org/wiki/Sign_function >> <http://en.wikipedia.org/wiki/Sign_function>) defined as: >> >> -1 if x < 0 >> 0 if x = 0 >> 1 if x > 0 >> >> 1 isn't really "part of" 42, for instance, at least not in the sense that 42 >> and + are "part of" 42. > > Should it be a stand-alone function, then? > > - Dave Sweeris
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