On Thursday, 19 July 2012 at 14:31:41 UTC, Petr Janda wrote:
Array gets sorted, then doubles are removed (uniq) and then
everything is converted to a string (map).
Everything was recently introduced around 2.059.
Ok, but what is map!(). What's the point of the exclamation
mark, is it a template specialization?
stuff after ! specifies template arguments, in this case a
predicate; "map" is a standard function in many languages; what
it does basically is to go over an iterable object, apply the
predicate function given in the template argument to each element
and returns a new iterable containing the results of the
predicate call on each element.
