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Apache Arrow - v6.0.1
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Apache Arrow - v6.0.1
Arrow.dom
Schema
Class Schema<T>
Type parameters
T
:
{}
=
any
Hierarchy
Schema
Index
Constructors
constructor
Properties
dictionaries
fields
metadata
Accessors
[
Symbol.to
String
Tag]
Methods
assign
select
select
At
to
String
Constructors
constructor
new
Schema<T>
(
fields
?:
Field
<
any
>
[]
, metadata
?:
null
|
Map
<
string
,
string
>
, dictionaries
?:
null
|
Map
<
number
,
DataType
<
Type
,
any
>
>
)
:
Schema
<
T
>
Type parameters
T
:
{}
=
any
Parameters
fields:
Field
<
any
>
[]
= []
Optional
metadata:
null
|
Map
<
string
,
string
>
Optional
dictionaries:
null
|
Map
<
number
,
DataType
<
Type
,
any
>
>
Returns
Schema
<
T
>
Properties
Readonly
dictionaries
dictionaries
:
Map
<
number
,
DataType
<
Type
,
any
>
>
Readonly
fields
fields
:
Field
<
T
[
keyof
T
]
>
[]
Readonly
metadata
metadata
:
Map
<
string
,
string
>
Accessors
[
Symbol.to
String
Tag]
get
[Symbol.toStringTag]
(
)
:
string
Returns
string
Methods
assign
assign<R>
(
schema
:
Schema
<
R
>
)
:
Schema
<
T
&
R
>
assign<R>
(
...
fields
:
(
Field
<
R
[
keyof
R
]
>
|
Field
<
R
[
keyof
R
]
>
[]
)
[]
)
:
Schema
<
T
&
R
>
Type parameters
R
:
{}
=
any
Parameters
schema:
Schema
<
R
>
Returns
Schema
<
T
&
R
>
Type parameters
R
:
{}
=
any
Parameters
Rest
...
fields:
(
Field
<
R
[
keyof
R
]
>
|
Field
<
R
[
keyof
R
]
>
[]
)
[]
Returns
Schema
<
T
&
R
>
select
select<K>
(
...
columnNames
:
K
[]
)
:
Schema
<
{
[
P
in
string
|
number
|
symbol
]
:
T
[
P
]
}
>
Type parameters
K
:
string
|
number
|
symbol
=
any
Parameters
Rest
...
columnNames:
K
[]
Returns
Schema
<
{
[
P
in
string
|
number
|
symbol
]
:
T
[
P
]
}
>
select
At
select
At<K>
(
...
columnIndices
:
number
[]
)
:
Schema
<
{}
>
Type parameters
K
:
DataType
<
Type
,
any
,
K
>
=
any
Parameters
Rest
...
columnIndices:
number
[]
Returns
Schema
<
{}
>
to
String
to
String
(
)
:
string
Returns
string
Modules
Arrow.dom
Arrow.node
Buffer
Type
Type
Builder
Column
Data
Frame
Data
Type
Field
Record
Batch
Record
Batch
Reader
Record
Batch
Writer
Schema
constructor
dictionaries
fields
metadata
[
Symbol.to
String
Tag]
assign
select
select
At
to
String
Table
Vector
Visitor
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