Reading a file of words line by line

[dwdv]

On 2020-01-16 04:54, Jesse Phillips via Digitalmars-d-learn wrote:
> [...]
> .map!(word => word.to!string.toUpper)
> .array
> .sort
> .uniq
> .map!(x => tuple (x, 0))
> .assocArray ;
> 

.each!(word => words[word.to!string.toUpper] = 0);

isn't far off, but could also be (sans imports):

return File(filename).byLine
     .map!(line => line.until!(not!isAlpha))
     .filter!(word => word.count == wordsize)
     .map!(word => word.to!string.toUpper)
     .assocArray(0.repeat);