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CSV::Table#delete_if {|column_name, values| ... } -> self (6173.0)

• 2.1.0
• 2.2.0
• 2.3.0
• 2.4.0
• 2.5.0
• 2.6.0
• 2.7.0
• 3.0
• 3.1
• 3.2
• 3.3

• インスタンスメソッド

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。

...ます。

//emlist[例 ロウモード][ruby]{
require "csv"

row1 = CSV::Row.new(["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, row...

...le.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, row2, 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 (6173.0)

• 2.1.0
• 2.2.0
• 2.3.0
• 2.4.0
• 2.5.0
• 2.6.0
• 2.7.0
• 3.0
• 3.1
• 3.2
• 3.3

• インスタンスメソッド

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。

...ます。

//emlist[例 ロウモード][ruby]{
require "csv"

row1 = CSV::Row.new(["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, row...

...le.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, row2, row3])
table.by_col!
table.delete_if { |column_name, values| column_name == "id" }
table.to_a # => [["name"], ["tanaka"], ["suzuki"], ["sato"]]
//}

@see CSV::Table#delete...