CSV::Builder
class CSV::Builder
Overview
A CSV Builder writes CSV to an IO
.
require "csv" result = CSV.build do |csv| # A row can be written by specifying several values csv.row "Hello", 1, 'a', "String with \"quotes\"" # Or an enumerable csv.row [1, 2, 3] # Or using a block, and appending to the row csv.row do |row| # Appending a single value row << 4 # Or multiple values row.concat 5, 6 # Or an enumerable row.concat [7, 8] end end puts result
Output:
Hello,1,a,"String with ""quotes""" 1,2,3 4,5,6,7,8
Defined in:
csv/builder.crClass Method Summary
- .new(io : IO)
Creates a builder that will write to the given
IO
.
Instance Method Summary
- #row(&block)
Yields a
CSV::Row
to append a row- - #row(values : Enumerable)
Appends the given values as a single row, and then a newline.
- #row(*values)
Appends the given values as a single row, and then a newline.
Instance methods inherited from class Reference
==(other : self)==(other) ==, dup dup, hash hash, inspect(io : IO) : Nil inspect, object_id : UInt64 object_id, pretty_print(pp) : Nil pretty_print, same?(other : Reference)
same?(other : Nil) same?, to_s(io : IO) : Nil to_s
Class methods inherited from class Reference
new new Instance methods inherited from class Object
!=(other) !=, !~(other) !~, ==(other) ==, ===(other : JSON::Any)===(other : YAML::Any)
===(other) ===, =~(other) =~, class class, dup dup, hash hash, inspect(io : IO)
inspect inspect, itself itself, not_nil! not_nil!, pretty_inspect(width = 79, newline = "\n", indent = 0) : String pretty_inspect, pretty_print(pp : PrettyPrint) : Nil pretty_print, tap(&block) tap, to_json(io : IO)
to_json to_json, to_pretty_json(indent : String = " ")
to_pretty_json(io : IO, indent : String = " ") to_pretty_json, to_s
to_s(io : IO) to_s, to_yaml(io : IO)
to_yaml to_yaml, try(&block) try
Class methods inherited from class Object
from_json(string_or_io, root : String) : selffrom_json(string_or_io) : self from_json, from_yaml(string_or_io) : self from_yaml
Class Method Detail
Instance Method Detail
def row(&block)Source
def row(values : Enumerable)Source
Appends the given values as a single row, and then a newline.
def row(*values)Source
Appends the given values as a single row, and then a newline.
© 2012–2017 Manas Technology Solutions.
Licensed under the Apache License, Version 2.0.
https://crystal-lang.org/api/0.22.0/CSV/Builder.html