On Thursday, 3 September 2015 at 17:12:31 UTC, H. S. Teoh wrote:
Is there a way for the lexer to check for the specific
character sequence '=', '+', whitespace and not others (e.g.
'=', whitespace, '+')? IOW, "a =+ b" will be prohibited, but
"a = + b" will be allowed. If so, I agree with this.
On that note, though, the unary + operator is totally useless
in D... maybe we should get rid of that instead? (Then "=+"
will automatically be an error.)
What about the generalization? E.g., '=', '-', whitespace?