84件ヒット
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:ライブラリ
- csv (84)
クラス
- CSV (12)
-
CSV
:: Row (12) -
CSV
:: Table (60)
キーワード
- << (24)
- delete (12)
-
delete
_ if (24) -
header
_ converters (12)
検索結果
先頭5件
-
CSV
:: Table # to _ a -> [Array] (18144.0) -
配列の配列を返します。
...。
//emlist[例][ruby]{
require "csv"
row1 = CSV::Row.new(["header1", "header2"], ["row1_1", "row1_2"])
row2 = CSV::Row.new(["header1", "header2"], ["row2_1", "row2_2"])
table = CSV::Table.new([row1, row2])
table.to_a # => [["header1", "header2"], ["row1_1", "row1_2"], ["row2_1", "row2_2"]]
//}... -
CSV
# header _ converters -> Array (6144.0) -
現在有効なヘッダ用変換器のリストを返します。
...ェクトを返します。
//emlist[例][ruby]{
require "csv"
csv = CSV.new("HEADER1,HEADER2\nrow1_1,row1_2", headers: true, header_converters: CSV::HeaderConverters.keys)
csv.header_converters # => [:downcase, :symbol]
csv.read.to_a # => header2], ["row1_1", "row1_2"
//}
@see CSV.new... -
CSV
:: Table # delete(index _ or _ header) -> object (144.0) -
指定された行か列を削除して返します。
...][ruby]{
require "csv"
row1 = CSV::Row.new(["header1", "header2"], ["row1_1", "row1_2"])
row2 = CSV::Row.new(["header1", "header2"], ["row2_1", "row2_2"])
table = CSV::Table.new([row1, row2])
table.delete(1)
table.to_a # => [["header1", "header2"], ["row1_1", "row1_2"]]
//}
@see CSV::Table... -
CSV
:: Table # delete _ if {|column _ name , values| . . . } -> self (67.0) -
ブロックを評価した結果が真である行か列を削除します。
...["header1", "header2"], ["row1_1", "valid"])
row2 = CSV::Row.new(["header1", "header2"], ["row2_1", "invalid"])
row3 = CSV::Row.new(["header1", "header2"], ["row3_1", "valid"])
table = CSV::Table.new([row1, row2, row3])
table.delete_if { |row| row["header2"] == "invalid" }
table.to_a # => [["header1......", "header2"], ["row1_1", "valid"], ["row3_1", "valid"]]
//}
//emlist[例 カラムモード][ruby]{
require "csv"
row1 = CSV::Row.new(["id", "name"], [1, "tanaka"])
row2 = CSV::Row.new(["id", "name"], [2, "suzuki"])
row3 = CSV::Row.new(["id", "name"], [3, "sato"])
table = CSV::Table.new([row1, row......2, row3])
table.by_col!
table.delete_if { |column_name, values| column_name == "id" }
table.to_a # => [["name"], ["tanaka"], ["suzuki"], ["sato"]]
//}
@see CSV::Table#delete... -
CSV
:: Table # delete _ if {|row| . . . } -> self (67.0) -
ブロックを評価した結果が真である行か列を削除します。
...["header1", "header2"], ["row1_1", "valid"])
row2 = CSV::Row.new(["header1", "header2"], ["row2_1", "invalid"])
row3 = CSV::Row.new(["header1", "header2"], ["row3_1", "valid"])
table = CSV::Table.new([row1, row2, row3])
table.delete_if { |row| row["header2"] == "invalid" }
table.to_a # => [["header1......", "header2"], ["row1_1", "valid"], ["row3_1", "valid"]]
//}
//emlist[例 カラムモード][ruby]{
require "csv"
row1 = CSV::Row.new(["id", "name"], [1, "tanaka"])
row2 = CSV::Row.new(["id", "name"], [2, "suzuki"])
row3 = CSV::Row.new(["id", "name"], [3, "sato"])
table = CSV::Table.new([row1, row......2, row3])
table.by_col!
table.delete_if { |column_name, values| column_name == "id" }
table.to_a # => [["name"], ["tanaka"], ["suzuki"], ["sato"]]
//}
@see CSV::Table#delete... -
CSV
:: Row # <<(arg) -> self (61.0) -
自身に与えられたデータを追加します。
...<< ["header1", "row1_1"]
row << ["header2", "row1_2"]
row.to_a # => [["header1", "row1_1"], ["header2", "row1_2"]]
//}
//emlist[例 Hash を指定][ruby]{
require "csv"
row = CSV::Row.new([], [], true)
row << { "header1" => "row1_1" }
row << { "header2" => "row1_2" }
row.to_a # => [["header1", "......row1_1"], ["header2", "row1_2"]]
//}... -
CSV
:: Table # <<(row _ or _ array) -> self (43.0) -
自身の最後に新しい行を追加します。
...mlist[例][ruby]{
require "csv"
row1 = CSV::Row.new(["header1", "header2"], ["row1_1", "row1_2"])
row2 = CSV::Row.new(["header1", "header2"], ["row2_1", "row2_2"])
table = CSV::Table.new([row1])
table << row2
table.to_a # => [["header1", "header2"], ["row1_1", "row1_2"], ["row2_1", "row2_2"]]
//}...