如何在Jruby中传递类类型参数

Question

Say I need to translate the following Java code in jruby:

Map<String, Integer> topicCountMap = new HashMap<String, Integer>();

In jruby, without type arguments it'd look like this:

topic_count_map = HashMap.new

But how do I pass type arguments?

Answer 1

You don't. The type arguments are not specified in JRuby

topic_count_map = HashMap.new
topic_count_map.put("foo", 100)
topic_count_map.get("foo")

Read: JRuby Basics