On Sunday, 24 June 2018 at 21:28:06 UTC, aliak wrote:
On Sunday, 24 June 2018 at 20:33:32 UTC, Rudy Raab wrote:
So I have an XLSX (MS Excel 2007+ file format) library that I wrote (https://github.com/TransientResponse/dlang-xlsx) that I recently converted from std.xml to dxml. That went well and it still works (much faster too).

[...]

I think it's the isSomeChar!(ElementType!R), not the isRandomAccessRange (because string isSomeString and !isSomeChar)?

Cheers,
- Ali

Changing it to isSomeString!(ElementType!R) moves the error to my empty() function:
```
source\xlsx.d(205,22): Error: template std.range.primitives.empty cannot deduce function from argument types !()(XLSheet!(string[])), candidates are:
C:\D\dmd2\windows\bin\..\..\src\phobos\std\range\primitives.d(2090,16):        
std.range.primitives.empty(T)(auto ref scope const(T) a) if 
(is(typeof(a.length) : size_t) || isNarrowString!T)
```

I tried implementing a length() function (the number of rows remaining in the range, which is known at runtime), but the error remains.

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