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検索結果
先頭5件
-
String
# tr(pattern , replace) -> String (21445.0) -
pattern 文字列に含まれる文字を検索し、 それを replace 文字列の対応する文字に置き換えます。
...pattern の形式は tr(1) と同じです。つまり、
`a-c' は a から c を意味し、"^0-9" のように
文字列の先頭が `^' の場合は指定文字以外が置換の対象になります。
replace に対しても `-' による範囲指定が可能です。
`-' は文字列の両......合にだけ範囲指定の意味になります。
`^' も文字列の先頭にあるときにだけ否定の効果を発揮します。
また、`-', `^', `\' はバックスラッシュ (`\') によりエスケープできます。
replace の範囲が pattern の範囲よりも小さい場合......定した文字を置き換える文字
//emlist[例][ruby]{
p "foo".tr("f", "X") # => "Xoo"
p "foo".tr('a-z', 'A-Z') # => "FOO"
p "FOO".tr('A-Z', 'a-z') # => "foo"
# シーザー暗号の復号
p "ORYV".tr("A-Z", "D-ZA-C") # => "RUBY"
# 全角英数字といくつかの記号の半角化... -
Matrix
# tr -> Integer | Float | Rational | Complex (21201.0) -
トレース (trace) を返します。
...トレース (trace) を返します。
行列のトレース (trace) とは、対角要素の和です。
//emlist[例][ruby]{
require 'matrix'
Matrix[[7,6], [3,9]].trace # => 16
//}
trace は正方行列でのみ定義されます。
@raise ExceptionForMatrix::ErrDimensionMismatch 行列が... -
Matrix
# -(m) -> Matrix (21200.0) -
self から行列mを減算した行列を返します。 self の column_size が 1 なら Vector オブジェクトも指定出来ます。
...した行列を返します。
self の column_size が 1 なら Vector オブジェクトも指定出来ます。
@param m 減算する行列。減算可能な行列やベクトルを指定します。
@raise ExceptionForMatrix::ErrDimensionMismatch 次元が合わない場合に発生します... -
Vector
# -(v) -> Vector | Matrix (18200.0) -
self からベクトル v を減じたベクトルを返します。
...には column_size が 1 の Matrix オブジェクトも指定できます。
その場合は返り値も Matrix オブジェクトになります。
@param v 減算するベクトル。減算可能な行列やベクトルを指定します。
@raise ExceptionForMatrix::ErrDimensionMismatch 自... -
shell
/ process-controller (12000.0) -
プロセスを制御するためのクラスを定義したライブラリです。
プロセスを制御するためのクラスを定義したライブラリです。 -
String
# tr _ s(pattern , replace) -> String (9391.0) -
文字列の中に pattern 文字列に含まれる文字が存在したら、 replace 文字列の対応する文字に置き換えます。さらに、 置換した部分内に同一の文字の並びがあったらそれを 1 文字に圧縮します。
...ttern の形式は tr(1) と同じです。
つまり「a-c」は a から c を意味し、
"^0-9" のように文字列の先頭が「^」の場合は指定した文字以外が置換の対象になります。
replace でも「-」を使って範囲を指定できます。
「-」は文字列......合にだけ範囲指定の意味になります。
同様に、「^」もその効果は文字列の先頭にあるときだけです。
また、「-」、「^」、「\」はバックスラッシュ (「\」) でエスケープできます。
replace の範囲が pattern の範囲よりも小さ......ooooogle".tr_s("o", "X") # => "gXgle"
p "gooooogle".tr_s("a-z", "A-Z") # => "GOGLE"
//}
注意:
一般に、tr_s を tr と squeeze で置き換えることはできません。
tr と squeeze の組みあわせでは tr の置換後の文字列全体を squeeze しますが、
tr_s は置... -
REXML
:: StreamListener # instruction(name , instruction) -> () (9312.0) -
XML処理命令(PI)をパースしたときに呼び出されるコールバックメソッドです。
...me ターゲット名が文字列で渡されます
@param instruction 処理命令の内容が文字列で渡されます
=== 例
<?xml-stylesheet type="text/css" href="style.css"?>
というPIに対し
name: "xml-stylesheet"
instruction: " type=\"text/css\" href=\"style.css\""
という引... -
String
# tr _ s!(pattern , replace) -> self | nil (9303.0) -
文字列の中に pattern 文字列に含まれる文字が存在したら、 replace 文字列の対応する文字に置き換えます。さらに、 置換した部分内に同一の文字の並びがあったらそれを 1 文字に圧縮します。
...は tr(1) と同じです。
つまり「a-c」は a から c を意味し、
"^0-9" のように文字列の先頭が「^」の場合は指定した文字以外が置換の対象になります。
replace でも「-」を使って範囲を指定できます。
//emlist[][ruby]{
p "gooooogle".tr_s......("a-z", "A-Z") # => "GOGLE"
//}
「-」は文字列の両端にない場合にだけ範囲指定の意味になります。
同様に、「^」もその効果は文字列の先頭にあるときだけです。
また、「-」、「^」、「\」はバックスラッシュ (「\」) でエスケ......われます。
tr_s は置換後の文字列を生成して返します。
tr_s! は self を変更して返しますが、
置換が起こらなかった場合は nil を返します。
注意:
一般に、tr_s! を tr! と squeeze! で置き換えることはできません。
tr! と squeeze!... -
Matrix
# entrywise _ product(m) -> Matrix (9300.0) -
アダマール積(要素ごとの積)を返します。
...ダマール積(要素ごとの積)を返します。
@raise ExceptionForMatrix::ErrDimensionMismatch 行や列の要素数が一致しない時に発生します。
//emlist[例][ruby]{
require 'matrix'
Matrix[[1,2], [3,4]].hadamard_product(Matrix[[1,2], [3,2]]) # => Matrix[[1, 4], [9, 8]]
//}... -
Matrix
:: EigenvalueDecomposition # eigenvector _ matrix -> Matrix (9300.0) -
右固有ベクトルを横に並べた行列を返します。
右固有ベクトルを横に並べた行列を返します。