diff options
| author | Takashi Kokubun <[email protected]> | 2024-01-23 12:09:57 -0800 |
|---|---|---|
| committer | GitHub <[email protected]> | 2024-01-23 20:09:57 +0000 |
| commit | c84237f9531aed3b204d3fdacc2dd9d2bd4c7d81 (patch) | |
| tree | 924ec7260333bb75d8780e76325d5dd0303e0729 /array.rb | |
| parent | 27c1dd8634d34bfe3592151d66b410f28ca749ce (diff) | |
Rewrite Array#each in Ruby using Primitive (#9533)
Diffstat (limited to 'array.rb')
| -rw-r--r-- | array.rb | 55 |
1 files changed, 55 insertions, 0 deletions
@@ -1,5 +1,60 @@ class Array # call-seq: + # array.each {|element| ... } -> self + # array.each -> Enumerator + # + # Iterates over array elements. + # + # When a block given, passes each successive array element to the block; + # returns +self+: + # + # a = [:foo, 'bar', 2] + # a.each {|element| puts "#{element.class} #{element}" } + # + # Output: + # + # Symbol foo + # String bar + # Integer 2 + # + # Allows the array to be modified during iteration: + # + # a = [:foo, 'bar', 2] + # a.each {|element| puts element; a.clear if element.to_s.start_with?('b') } + # + # Output: + # + # foo + # bar + # + # When no block given, returns a new Enumerator: + # a = [:foo, 'bar', 2] + # + # e = a.each + # e # => #<Enumerator: [:foo, "bar", 2]:each> + # a1 = e.each {|element| puts "#{element.class} #{element}" } + # + # Output: + # + # Symbol foo + # String bar + # Integer 2 + # + # Related: #each_index, #reverse_each. + def each + Primitive.attr! :inline_block + unless defined?(yield) + return to_enum(:each) { self.length } + end + _i = 0 + value = nil + while Primitive.cexpr!(%q{ ary_fetch_next(self, LOCAL_PTR(_i), LOCAL_PTR(value)) }) + yield value + end + self + end + + # call-seq: # array.shuffle!(random: Random) -> array # # Shuffles the elements of +self+ in place. |