struct CSV::Row
Overview
A Row of a CSV::WithHeaders instance.
Defined in:
csv.crInstance Method Summary
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#[](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.
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#[]?(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, unsafe_as(type : T.class) forall T unsafe_as
Constructor 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
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.
Returns this row's value at the given column index.
A negative index counts from the end.
Raises IndexError if no such column exists.
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.
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.
Returns this row's value at the given column index.
A negative index counts from the end.
Returns nil if no such column exists.
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.
Returns the number of columns in this row, regardless of the number of headers (if requested).
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
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