Custom String Templates

Language Design
22

What can be done without significant language change, in my opinion: string interpolation should not just use StringBuilder.append(...), but look for operator fun toString() for interpolated objects (dynamically or statically). Then we can write the above example without the + operator.

object SqlBuilder {
    operator fun Column.toString(): String = "\"$name\""
}
val sql = buildSql { "select $id,$user from table" }