28
Numerics library
[numerics]
28.6
Numeric arrays
[numarray]
28.6.9
Class template
indirect_
array
[template.indirect.array]
28.6.9.1
Overview
[template.indirect.array.overview]
🔗
namespace
std
{
template
<
class
T
>
class
indirect_array
{
public
:
using
value_type
=
T;
void
operator
=
(
const
valarray
<
T
>
&
)
const
;
void
operator
*
=
(
const
valarray
<
T
>
&
)
const
;
void
operator
/
=
(
const
valarray
<
T
>
&
)
const
;
void
operator
%
=
(
const
valarray
<
T
>
&
)
const
;
void
operator
+
=
(
const
valarray
<
T
>
&
)
const
;
void
operator
-
=
(
const
valarray
<
T
>
&
)
const
;
void
operator
^
=
(
const
valarray
<
T
>
&
)
const
;
void
operator
&
=
(
const
valarray
<
T
>
&
)
const
;
void
operator
|
=
(
const
valarray
<
T
>
&
)
const
;
void
operator
<
<
=
(
const
valarray
<
T
>
&
)
const
;
void
operator
>
>
=
(
const
valarray
<
T
>
&
)
const
; indirect_array
(
const
indirect_array
&
)
;
~
indirect_array
(
)
;
const
indirect_array
&
operator
=
(
const
indirect_array
&
)
const
;
void
operator
=
(
const
T
&
)
const
; indirect_array
(
)
=
delete
;
// as implied by declaring copy constructor above
}
;
}
1
#
This template is a helper template used by the indirect subscript operator
🔗
indirect_array
<
T
>
valarray
<
T
>
::
operator
[
]
(
const
valarray
<
size_t
>
&
)
;
2
#
It has reference semantics to a subset of an array specified by an
indirect_
array
.
Thus, the expression
a
[
indirect
]
=
b;
has the effect of assigning the elements of
b
to the elements in
a
whose indices appear in
indirect
.