Jonathan M. Davis' recent post about string mixins reminded me of something I put together a couple of months ago: variable interpolation in strings http://dpaste.dzfl.pl/5689d535
Some of the projects I work on have lots of embedded queries which are assembled on the fly (not just values but column and table names). Using concatenation tends to break the queries up excessively, while using format with lots of arguments makes them hard to modify. So I took a page from PHP's book and implemented "$foo" style expansion. My original thought was to allow cool syntax like x!"embedded variable: $foo" but template instantiations don't have access to variables from instantiation scope (unless you pass them explicitly via alias, of course). Thus the need for string mixins. The `inContext` version does take a struct or object which constitutes the set of available variables. My ugly parsing code could be replaced (maybe, haven't actually tested it) by the nice version(none)'d function which uses regexs if match() was available for CTFE. Justin
