Object.method_missing--透明思考

Object.method_missing- -

(from Programming Ruby : http://www.rubycentral.com/book/ref_c_object.html#Object.method_missing)

obj.method_missing( aSymbol [, *args ] ) -> anObject

Invoked by Ruby when obj is sent a message it cannot handle. aSymbol is the symbol for the method called, and args are any arguments that were passed to it. The example below creates a class Roman, which responds to methods with names consisting of roman numerals, returning the corresponding integer values.

class Roman def romanToInt(str) # ... end def method_missing(methId) str = methId.id2name romanToInt(str) end end

r = Roman.new
r.iv » 4
r.xxiii » 23
r.mm » 2000

- 作者：透明 2005年09月16日, 星期五 11:26

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透明思考