class RuboCop::Cop::Style::TrailingCommaInArrayLiteral
Checks for trailing comma in array literals. The configuration options are:
-
‘consistent_comma`: Requires a comma after the
last item of all non-empty, multiline array literals.
-
‘comma`: Requires a comma after last item in an array,
but only when each item is on its own line.
-
‘no_comma`: Does not require a comma after the
last item in an array
@example EnforcedStyleForMultiline: consistent_comma
# bad a = [1, 2,] # good a = [1, 2] # good a = [ 1, 2, 3, ] # good a = [ 1, 2, 3, ] # good a = [ 1, 2, ]
@example EnforcedStyleForMultiline: comma
# bad a = [1, 2,] # good a = [1, 2] # bad a = [ 1, 2, 3, ] # good a = [ 1, 2, 3 ] # bad a = [ 1, 2, 3, ] # good a = [ 1, 2, 3 ] # good a = [ 1, 2, ]
@example EnforcedStyleForMultiline: no_comma (default)
# bad a = [1, 2,] # good a = [ 1, 2 ]
Public Instance Methods
on_array(node)
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# File lib/rubocop/cop/style/trailing_comma_in_array_literal.rb, line 88 def on_array(node) return unless node.square_brackets? check_literal(node, 'item of %<article>s array') end