ruby - Priority among route patterns -

i have thin server running (without web application framework). in routing pattern, order of matching patterns not seem make difference. whether do:

rack::handler::thin.run(rack::builder.new   map("/"){...}   map("/foo/"){...} end, port: 3000) 

or

rack::handler::thin.run(rack::builder.new   map("/foo/"){...}   map("/"){...} end, port: 3000) 

the request localhost:3000/foo/ correctly picked map("/foo/"){...} , not map("/"){...}. how priority determined?

for web application frameworks, example in sinatra, says routes matched in order defined. first route matches request invoked, not case setup have app.

https://github.com/rack/rack/blob/master/lib/rack/urlmap.rb

priority doesn't determined in rack::urlmap. matched full path of resource, provide with

map(){ ... }