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検索結果
先頭5件
-
FileUtils
# ruby(*args) {|result , status| . . . } (18230.0) -
与えられた引数で Ruby インタプリタを実行します。
...与えられた引数で Ruby インタプリタを実行します。
@param args Ruby インタプリタに与える引数を指定します。
例:
ruby %{-pe '$_.upcase!' <README}
@see Kernel.#sh... -
Logger
:: Formatter # datetime _ format=(format) (15307.0) -
ログの日時フォーマットをセットします。
...am format 日時のフォーマット文字列。Time#strftime で使用するフォーマット文字列と
同じものを使用できます。
//emlist[例][ruby]{
require 'logger'
formatter = Logger::Formatter.new
formatter.datetime_format # => nil
formatter.datetime_format = '%Y......-%m-%d %H:%M:%S' # => "%Y-%m-%d %H:%M:%S"
formatter.datetime_format # => "%Y-%m-%d %H:%M:%S"
//}
@see Time#strftime... -
Pathname
# relative _ path _ from(base _ directory) -> Pathname (15307.0) -
base_directory から self への相対パスを求め、その内容の新しい Pathname オブジェクトを生成して返します。
...base_directory から self への相対パスを求め、その内容の新しい Pathname
オブジェクトを生成して返します。
パス名の解決は文字列操作によって行われ、ファイルシステムをアクセス
しません。
self が相対パスなら base_directory......athname オブジェクトを指定します。
@raise ArgumentError Windows上でドライブが違うなど、base_directory から self への相対パスが求められないときに例外が発生します。
//emlist[例][ruby]{
require 'pathname'
path = Pathname.new("/tmp/foo")
base = Pat......hname.new("/tmp")
path.relative_path_from(base) # => #<Pathname:foo>
//}... -
Gem
:: Commands :: UpdateCommand # do _ rubygems _ update(version) (15201.0) -
RubyGems 自体を更新します。
...
RubyGems 自体を更新します。... -
Array
# at(nth) -> object | nil (15110.0) -
nth 番目の要素を返します。nth 番目の要素が存在しない時には nil を返します。
...みます。
@raise TypeError 引数に整数以外の(暗黙の型変換が行えない)オブジェクトを
指定した場合に発生します。
//emlist[例][ruby]{
a = [ "a", "b", "c", "d", "e" ]
a[0] #=> "a"
a[1] #=> "b"
a[-1] #=> "e"
a[-2] #=> "d"
a[10] #=> nil
//}... -
Array
# repeated _ combination(n) -> Enumerator (12313.0) -
サイズ n の重複組み合わせをすべて生成し、それを引数としてブロックを実行 します。
...得られる組み合わせの順序は保証されません。ブロックなしで呼び出されると、
組み合わせを生成する Enumerator オブジェクトを返します。
@param n 生成される配列のサイズを整数で指定します。
整数以外のオブジェ......指定した場合に発生します。
//emlist[例][ruby]{
a = [1, 2, 3]
a.repeated_combination(1).to_a #=> [[1], [2], [3]]
a.repeated_combination(2).to_a #=> [[1,1],[1,2],[1,3],[2,2],[2,3],[3,3]]
a.repeated_combination(3).to_a #=> [[1,1,1],[1,1,2],[1,1,3],[1,2,2],[1,2,3],......3,3]]
a.repeated_combination(4).to_a #=> [[1,1,1,1],[1,1,1,2],[1,1,1,3],[1,1,2,2],[1,1,2,3],
# [1,1,3,3],[1,2,2,2],[1,2,2,3],[1,2,3,3],[1,3,3,3],
# [2,2,2,2],[2,2,2,3],[2,2,3,3],[2,3,3,3],[3,3,3,3]]
a.repeated_combination(0).to_a... -
Array
# repeated _ permutation(n) -> Enumerator (12313.0) -
サイズ n の重複順列をすべて生成し,それを引数としてブロックを実行します。
...実行します。
得られる順列の順序は保証されません。ブロックなしで呼び出されると, 順列
を生成する Enumerator オブジェクトを返します。
@param n 生成する配列のサイズを整数で指定します。
整数以外のオブジェ......t[例][ruby]{
a = [1, 2]
a.repeated_permutation(1).to_a #=> [[1], [2]]
a.repeated_permutation(2).to_a #=> [[1,1],[1,2],[2,1],[2,2]]
a.repeated_permutation(3).to_a #=> [[1,1,1],[1,1,2],[1,2,1],[1,2,2],
# [2,1,1],[2,1,2],[2,2,1],[2,2,2]]
a.repeated_permutation(0).......to_a #=> [[]] # one permutation of length 0
//}
ブロックが与えられた場合、作成した配列の各要素を引数としてブロックを実
行して self を返します。
//emlist[例][ruby]{
a = [1, 2]
result = []
a.repeated_permutation(3) {|e| result << e} # => [1,2]
result #=... -
Logger
# datetime _ format=(format) (12307.0) -
ログに記録する時の日付のフォーマットをセットします。
...ットをセットします。
//emlist[例][ruby]{
require 'logger'
logger = Logger.new(STDOUT)
logger.datetime_format # => nil
logger.debug("test")
logger.datetime_format = '%Y/%m/%dT%H:%M:%S.%06d' # => "%Y/%m/%dT%H:%M:%S.%06d"
logger.datetime_format # => "%Y/%m/%dT%H:%M:%S.%06d"
logger.debug("......test")
# => D, [2019-03-13T23:52:13.674385 #17393] DEBUG -- : test
# D, [2019/03/13T23:52:13.000012#17393] DEBUG -- : test
//}
@see Time#strftime, Logger#datetime_format... -
Array
# repeated _ combination(n) { |c| . . . } -> self (12213.0) -
サイズ n の重複組み合わせをすべて生成し、それを引数としてブロックを実行 します。
...得られる組み合わせの順序は保証されません。ブロックなしで呼び出されると、
組み合わせを生成する Enumerator オブジェクトを返します。
@param n 生成される配列のサイズを整数で指定します。
整数以外のオブジェ......指定した場合に発生します。
//emlist[例][ruby]{
a = [1, 2, 3]
a.repeated_combination(1).to_a #=> [[1], [2], [3]]
a.repeated_combination(2).to_a #=> [[1,1],[1,2],[1,3],[2,2],[2,3],[3,3]]
a.repeated_combination(3).to_a #=> [[1,1,1],[1,1,2],[1,1,3],[1,2,2],[1,2,3],......3,3]]
a.repeated_combination(4).to_a #=> [[1,1,1,1],[1,1,1,2],[1,1,1,3],[1,1,2,2],[1,1,2,3],
# [1,1,3,3],[1,2,2,2],[1,2,2,3],[1,2,3,3],[1,3,3,3],
# [2,2,2,2],[2,2,2,3],[2,2,3,3],[2,3,3,3],[3,3,3,3]]
a.repeated_combination(0).to_a...