CSV::Row
struct CSV::Row
Overview
A Row of a CSV::WithHeaders instance.
Defined in:
csv.crInstance Method Summary
- #[](header : String) : String
Returns the current row's value corresponding to the given header name.
- #[](column : Int) : String
Returns this row's value at the given column index.
- #[](header_pattern : Regex) : String
Returns this row's value corresponding to the given header_pattern.
- #[]?(header : String) : String?
Returns this row's value corresponding to the given header name.
- #[]?(column : Int) : String?
Returns this row's value at the given column index.
- #[]?(header_pattern : Regex) : String?
Returns this row's value corresponding to the given header_pattern.
- #size
Returns the number of columns in this row, regardless of the number of headers (if requested).
- #to_a : Array(String)
Converts this row to an
Array. - #to_h : Hash(String, String)
Converts this row to a
Hash. - #values_at(*columns : Int)
Returns a tuple of this row's values at given indices A negative index counts from the end.
- #values_at(*headers : String)
Returns a tuple of this row's values corresponding to the given headers Raises
KeyErrorif any header doesn't exist.
Instance methods inherited from struct Struct
==(other : self) : Bool ==, hash : Int32 hash, inspect(io : IO) : Nil inspect, pretty_print(pp) : Nil pretty_print, to_s(io) to_s Instance methods inherited from struct Value
==(other) ==, dup dup 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
Instance Method Detail
def [](header : String) : StringSource
Returns the current row's value corresponding to the given header name. Raises KeyError if no such header exists. Raises CSV::Error if headers were not requested-
def [](column : Int) : StringSource
Returns this row's value at the given column index. A negative index counts from the end. Raises IndexError if no such column exists.
def [](header_pattern : Regex) : StringSource
Returns this row's value corresponding to the given header_pattern. Raises KeyError if no such header exists. Raises CSV::Error if headers were not requested-
def []?(header : String) : String?Source
Returns this row's value corresponding to the given header name. Returns nil if no such header exists. Raises CSV::Error if headers were not requested-
def []?(column : Int) : String?Source
Returns this row's value at the given column index. A negative index counts from the end. Returns nil if no such column exists.
def []?(header_pattern : Regex) : String?Source
Returns this row's value corresponding to the given header_pattern. Returns nil if no such header exists. Raises CSV::Error if headers were not requested-
def sizeSource
Returns the number of columns in this row, regardless of the number of headers (if requested).
def values_at(*columns : Int)Source
Returns a tuple of this row's values at given indices A negative index counts from the end. Raises IndexError if any column doesn't exist The behavior of returning a tuple is similar to Hash#values_at
def values_at(*headers : String)Source
Returns a tuple of this row's values corresponding to the given headers Raises KeyError if any header doesn't exist. Raises CSV::Error if headers were not requested The behavior of returning a tuple is similar to Hash#values_at
© 2012–2017 Manas Technology Solutions.
Licensed under the Apache License, Version 2.0.
https://crystal-lang.org/api/0.22.0/CSV/Row.html
