U:RDoc::AnyMethod[iI"sum:ETI"Enumerable#sum;TF:publico:RDoc::Markup::Document:@parts[o:RDoc::Markup::Paragraph;	[I"(Calculates a sum from the elements.;To:RDoc::Markup::BlankLineo:RDoc::Markup::Verbatim;	[I"/payments.sum { |p| p.price * p.tax_rate }
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;	[I"MThe default sum of an empty list is zero. You can override this default:;T@o;;	[I"@[].sum(Payment.new(0)) { |i| i.amount } # => Payment.new(0);T;
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