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| habere-et-disper | m: my NaN $foo = Rat.new(0,0).Num; | 15:07 | |
| camelia | Type check failed in assignment to $foo; expected NaN but got NaN in block <unit> at <tmp> line 1 |
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| habere-et-disper | 🤣 => "expected NaN but got NaN" | 15:09 | |
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| ab5tract | yeah, that's LTA | 15:58 | |
| m: dd NaN.WHAT | 16:00 | ||
| camelia | Num | ||
| ab5tract | it's a bit of a special case when it comes to the type system. | ||
| m: subset IsNaN of Num where NaN; my IsNaN $n = NaN; dd $n | 17:08 | ||
| camelia | IsNaN $n = NaN | ||
| librasteve | dihwidt | 19:46 | |
| ab5tract | librasteve: if a type can't be assigned to like this, it probably should be a compile time error to use it as a type constraint on a container | 19:47 | |
| librasteve | m: my Nil $n = Nil; $n = 2; | 20:22 | |
| Raku eval | Exit code: 1 Type check failed in assignment to $n; expected Nil but got Int (2) in block <unit> at main.raku line 1 | 20:23 | |
| librasteve | just thought I would elaborate a bit ... but actually Nil is not conected to Inf/NaN case | 20:30 | |
| with regards to Inf/NaN as a container type, well that's nonsensical and so far the authors of raku have not included a check for that since errr no one would want to do it | 20:31 | ||
| ab5tract: I agree that a compile time check would be correct and would prevent this kind of error ... but I also think that there are many, many silly things that can be written and that our compiler gurus have better things to do with their time | 20:33 | ||
| ab5tract | librasteve: fixing an LTA does not require a compiler guru | 21:04 | |
| This edge could at least be made less hilarious just by patching an exception class to produce something less obviously strange | 21:05 | ||
| That said, I doubt that this is more than an hour or two’s worth of work in RakuAST. And just because you told me that I have better things to do, I have half a mind to see if I’m correct :P | 21:06 | ||
| Ah look, it’s already been refined | 21:09 | ||
| m: Q|my NaN $n = NaN|.AST.EVAL | |||
| camelia | ===SORRY!=== Error while compiling EVAL_0 Cannot assign a literal of type Num (NaN) to a variable of type Num. You can declare the variable to be of type Cool, or try to coerce the value with NaN.Num or Num(NaN), or just write the value a… |
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| ab5tract | It’s still LTA though | 21:31 | |
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