View Problem
Check if a key exists in a map
Given a map pets 
ruby
ruby
fantom
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{joe:cat,mary:turtle,bill:canary} print "ok" if an pet exists for "mary"
puts "ok" if map.has_key?('mary')
puts "ok" if map['mary'] # Only works if map entry can't be nil or false
map := ["joe":"cat", "mary":"turtle", "bill":"canary"]
if (map.containsKey("mary")) echo("ok")
if (map.containsKey("mary")) echo("ok")
Submit a new solution for ruby, csharp, or fantom
There are 25 other solutions in additional languages (clojure, cpp, erlang, fsharp ...)
