Reading a file of words line by line

[Jesse Phillips]

On Wednesday, 15 January 2020 at 19:50:31 UTC, mark wrote:
> I really do need a set for the next part of the program, but 
> taking your code and ideas I have now reduced the function to 
> this:
>
> WordSet getWords(string filename, int wordsize) {
>     WordSet words;
>     File(filename).byLine
> 	.map!(line => line.until!(not!isAlpha))
> 	.filter!(word => word.count == wordsize)
> 	.each!(word => words[word.to!string.toUpper] = 0);
>     return words;
> }
>
> This is also 4x faster than my version that used a regex -- 
> thanks!
>
> Why did you use string.count rather than string.length?

Your solution is fine, but also



void main () {

auto file = ["word one", "my word", "word"] ;
writeln (uniqueWords(file, 4));
}

auto uniqueWords(string[] file, uint wordsize) {
     import std.algorithm, std.array, std.conv, std.functional, 
std.uni;

     return file
         .map!(line => line.until!(not!isAlpha))
         .filter!(word => word.count == wordsize)
         .map!(word => word.to!string.toUpper)
         .array
         .sort
         .uniq
.map!(x => tuple (x, 0))
.assocArray ;
}