diff options
Diffstat (limited to 'activesupport/lib/active_support/core_ext/array/grouping.rb')
| -rw-r--r-- | activesupport/lib/active_support/core_ext/array/grouping.rb | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/activesupport/lib/active_support/core_ext/array/grouping.rb b/activesupport/lib/active_support/core_ext/array/grouping.rb index 37f007c751..87ae052eb0 100644 --- a/activesupport/lib/active_support/core_ext/array/grouping.rb +++ b/activesupport/lib/active_support/core_ext/array/grouping.rb @@ -18,6 +18,11 @@ class Array # ["3", "4"] # ["5"] def in_groups_of(number, fill_with = nil) + if number.to_i <= 0 + raise ArgumentError, + "Group size must be a positive integer, was #{number.inspect}" + end + if fill_with == false collection = self else @@ -53,7 +58,7 @@ class Array # ["4", "5"] # ["6", "7"] def in_groups(number, fill_with = nil) - # size / number gives minor group size; + # size.div number gives minor group size; # size % number gives how many objects need extra accommodation; # each group hold either division or division + 1 items. division = size.div number @@ -83,10 +88,10 @@ class Array # # [1, 2, 3, 4, 5].split(3) # => [[1, 2], [4, 5]] # (1..10).to_a.split { |i| i % 3 == 0 } # => [[1, 2], [4, 5], [7, 8], [10]] - def split(value = nil, &block) - if block + def split(value = nil) + if block_given? inject([[]]) do |results, element| - if block.call(element) + if yield(element) results << [] else results.last << element @@ -95,9 +100,9 @@ class Array results end else - results, arr = [[]], self + results, arr = [[]], self.dup until arr.empty? - if (idx = index(value)) + if (idx = arr.index(value)) results.last.concat(arr.shift(idx)) arr.shift results << [] |