Object#send_with_default
Avoid those pesky whiny nils! send_with_default won’t complain.
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"hello".send_with_default(:length, 0) # => 5 nil.send_with_default(:length, 0) # => 0 "hello".send_with_default(:index, -1, 'e') # => 1 |
So sending parameters is a little clunky, but I don’t reckon’ you’ll want to do that much. Here is the extension you want:
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module CoreExtensions module Object def send_with_default(method, default, *args) !self.nil? && self.respond_to?(method) ? self.send(*args.unshift(method)) : default end end end Object.send(:include, CoreExtensions::Object) |
