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Enumerator
# size -> Integer | Float :: INFINITY | nil (18125.0) -
self の要素数を返します。
...いた場合はその
実行結果を返します。呼び出した時に要素数が不明であった場合は nil を返し
ます。
//emlist[例][ruby]{
(1..100).to_a.permutation(4).size # => 94109400
loop.size # => Float::INFINITY
(1..100).drop_while.size # => nil
//}
@see Enumerator.new... -
NEWS for Ruby 3
. 0 . 0 (12.0) -
NEWS for Ruby 3.0.0 このドキュメントは前回リリース以降のバグ修正を除くユーザーに影響のある機能の変更のリストです。
...lowing methods now return Array instances instead of subclass instances when called on subclass instances: 6087
* Array#drop
* Array#drop_while
* Array#flatten
* Array#slice!
* Array#slice / Array#[]
* Array#take
* Array#take_while
* Array#uniq
*......eql? are now defined and will return true for separate Proc instances if the procs were created from the same block. 14267
* Queue / SizedQueue
* Queue#pop, SizedQueue#push and related methods may now invoke the `block`/`unblock` scheduler hooks in a non-blocking context. 16786
* Ractor......* Microarchitectural optimizations
* Native functions shared by multiple methods are deduplicated on JIT compaction.
* Decrease code size of hot paths by some optimizations and partitioning cold paths.
* Instance variables
* Eliminate some redundant checks.
* Skip...