Ruby Beginner question:<BR><BR>Is there anyway I can determine whether a variable is a number or not? I understand in Ruby that you can convert variables to Integers by using the ".to_i" method. But ...
In Ruby (1.8.7), all of the following are (usually) implemented using hash lookups (and of these, many are hash lookups nearly every time, without any caching constructs): Method Lookup: Ruby’s class ...
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