> On Jun 28, 2017, at 5:43 PM, Alan Westbrook via swift-evolution > <[email protected]> wrote: > > >> On Jun 28, 2017, at 5:27 PM, Xiaodi Wu via swift-evolution >> <[email protected] <mailto:[email protected]>> wrote: >> >> In the initial example, repeated here in largely identical form, the desired >> comment is "array must be non-empty." In what way does that provide more >> information than a bare `!`? > > I’m going to second this sentiment with the feeling that the message is > seemingly redundant. It feels akin to the comment in this line of code: > > let value = 1 // This value is set to 1 > > On an error, one gets the trap with the optional unwrapped message, and goes > to the code where they see what is being forced by assumption. > > Does the message spelling out the code in natural language help?
Perhaps I am misunderstanding, we should probably not focus on the content of the message, but rather that it exists at all. Assuming that the fatal-error-with-message is useful, is it important to have a shorthand for this pattern built into the language? If we think so, I believe the original proposal is the best solution so far, given the arguments against using ?? fatal… Alan
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