I've written a Markov bot in D, and I have function whose job it
is to take an input string, convert all newline characters to
spaces and all uppercase letters to lowercase, and then return an
array of words that are generated by splitting the string up by
whitespace. Here is the function is question:
string[] split_sentence(string input)
{
string line;
foreach(c; input)
{
if(c == '\n' || c == '\r')
line ~= ' ';
else
line ~= c.toLower();
}
return line.splitter(' ').filter!(a => a.length).array;
}
Obviously, one issue is that because the string is immutable, I
can't modify it directly, and so I actually build an entirely new
string in place. I would have just made a mutable duplicate of
the input and modify that, but then I would get errors returning,
because it expects string[] and not char[][]. Is there a more
elegant way to do what I'm doing?
