Nathan de Vries wrote: > Sounds similar to the splat operator of Ruby: > > def foo(first, second, *rest) > puts first, second, rest.inspect > end > > foo(1,2) > => 1 2 [] > > foo(1,2,3,4,5) > => 1 2 [3, 4, 5] > > rest = [3,4,5] > foo(1,2, *rest) > => 1 2 [3, 4, 5] > > rest = [3,4,5] > foo(1,2, rest) > => 1 2 [[3, 4, 5]]
Right, as well as: rest = [1,2,3,4,5] foo(*rest) => 1 2 [3, 4, 5] all = [0, *rest] => [0, 1, 2, 3, 4, 5] and... irb(main):001:0> a = [1,2,3] => [1, 2, 3] irb(main):002:0> b,*c = a => [1, 2, 3] irb(main):003:0> b => 1 irb(main):004:0> c => [2, 3] irb(main):005:0> case 2 irb(main):006:1> when 0,*a irb(main):007:1> puts 'yep' irb(main):008:1> end yep => nil The splat operator splats into argument lists, array literals, etc. It also collects over parameter lists, multiple assignment, cases... I think just about anywhere where ExpressionList is valid. (I'm not sure we want to go that far... just saying.) Chris _______________________________________________ Es4-discuss mailing list Es4-discuss@mozilla.org https://mail.mozilla.org/listinfo/es4-discuss
