From 28de6b0da195e1ebf8f6ce30de462f44fb761b8b Mon Sep 17 00:00:00 2001 From: KOBAYASHI Shuji Date: Sat, 22 Jun 2019 19:05:42 +0900 Subject: Refine `Hash#rehash` example [ci skip] Previous example doesn't work because string key (frozen) can't be modified. --- src/hash.c | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-) (limited to 'src/hash.c') diff --git a/src/hash.c b/src/hash.c index a9367a426..b4d96251c 100644 --- a/src/hash.c +++ b/src/hash.c @@ -1378,10 +1378,21 @@ mrb_hash_merge(mrb_state *mrb, mrb_value hash1, mrb_value hash2) * values of key objects have changed since they were inserted, this * method will reindex hsh. * - * h = {"AAA" => "b"} - * h.keys[0].chop! - * h.rehash #=> {"AA"=>"b"} - * h["AA"] #=> "b" + * keys = (1..17).map{|n| [n]} + * k = keys[0] + * h = {} + * keys.each{|key| h[key] = key[0]} + * h #=> { [1]=> 1, [2]=> 2, [3]=> 3, [4]=> 4, [5]=> 5, [6]=> 6, [7]=> 7, + * [8]=> 8, [9]=> 9,[10]=>10,[11]=>11,[12]=>12,[13]=>13,[14]=>14, + * [15]=>15,[16]=>16,[17]=>17} + * h[k] #=> 1 + * k[0] = keys.size + 1 + * h #=> {[18]=> 1, [2]=> 2, [3]=> 3, [4]=> 4, [5]=> 5, [6]=> 6, [7]=> 7, + * [8]=> 8, [9]=> 9,[10]=>10,[11]=>11,[12]=>12,[13]=>13,[14]=>14, + * [15]=>15,[16]=>16,[17]=>17} + * h[k] #=> nil + * h.rehash + * h[k] #=> 1 */ static mrb_value mrb_hash_rehash(mrb_state *mrb, mrb_value self) -- cgit v1.2.3