operator()

Gets a reference to a set of elements. More...

Functions
array::array_proxy	operator() (const index &s0)
	This operator returns a reference of the original array at a given coordinate. More...
const array::array_proxy	operator() (const index &s0) const
	This operator returns a reference of the original array at a given coordinate. More...
array::array_proxy	operator() (const index &s0, const index &s1, const index &s2=span, const index &s3=span)
	This operator returns a reference of the original array at a given coordinate. More...
const array::array_proxy	operator() (const index &s0, const index &s1, const index &s2=span, const index &s3=span) const
	This operator returns a reference of the original array at a given coordinate. More...

Detailed Description

Gets a reference to a set of elements.

    array A = array(seq(1, 9), 3, 3);
    af_print(A);
    // 1.0000 4.0000 7.0000
    // 2.0000 5.0000 8.0000
    // 3.0000 6.0000 9.0000
 
    af_print(A(0));  // first element
    // 1.0000
 
    af_print(A(0, 1));  // first row, second column
    // 4.0000
 
    af_print(A(end));  // last element
    // 9.0000
 
    af_print(A(-1));  // also last element
    // 9.0000
 
    af_print(A(end - 1));  // second-to-last element
    // 8.0000
 
    af_print(A(1, span));  // second row
    // 2.0000     5.0000     8.0000
 
    af_print(A.row(end));  // last row
    // 3.0000     6.0000     9.0000
 
    af_print(A.cols(1, end));  // all but first column
    // 4.0000     7.0000
    // 5.0000     8.0000
    // 6.0000     9.0000
 
    float b_host[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
    array b(10, 1, b_host);
    af_print(b(seq(3)));
    // 0.0000
    // 1.0000
    // 2.0000
 
    af_print(b(seq(1, 7)));
    // 1.0000
    // 2.0000
    // 3.0000
    // 4.0000
    // 5.0000
    // 6.0000
    // 7.0000
 
    af_print(b(seq(1, 7, 2)));
    // 1.0000
    // 3.0000
    // 5.0000
    // 7.0000
 
    af_print(b(seq(0, end, 2)));
    // 0.0000
    // 2.0000
    // 4.0000
    // 6.0000
    // 8.0000

This operator returns a reference of the original array at a given coordinate. You can pass af::seq, af::array, or an int as it's parameters. These references can be used for assignment or returning references to af::array objects.

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Function Documentation

operator()() [1/4]

array::array_proxy operator()

(

const index &

s0

)

This operator returns a reference of the original array at a given coordinate.

You can pass af::seq, af::array, or an int as its parameters. These references can be used for assignment or returning references to af::array objects.

If the af::array is a multi-dimensional array then this coordinate will treated as the data as a linear array.

Parameters

[in]

s0

is sequence of linear indices

Returns

A reference to the array at the given index

operator()() [2/4]

const array::array_proxy operator()

(

const index &

s0

)

const

This operator returns a reference of the original array at a given coordinate.

You can pass af::seq, af::array, or an int as its parameters. These references can be used for assignment or returning references to af::array objects.

If the af::array is a multi-dimensional array then this coordinate will treated as the data as a linear array.

Parameters

[in]

s0

is sequence of linear indices

Returns

A reference to the array at the given index

operator()() [3/4]

array::array_proxy operator()	(	const index &	s0,
		const index &	s1,
		const index &	s2 = span,
		const index &	s3 = span
	)

This operator returns a reference of the original array at a given coordinate.

You can pass af::seq, af::array, or an int as it's parameters. These references can be used for assignment or returning references to af::array objects.

Parameters

[in]	s0	is sequence of indices along the first dimension
[in]	s1	is sequence of indices along the second dimension
[in]	s2	is sequence of indices along the third dimension
[in]	s3	is sequence of indices along the fourth dimension

Returns

A reference to the array at the given index

operator()() [4/4]

const array::array_proxy operator()	(	const index &	s0,
		const index &	s1,
		const index &	s2 = span,
		const index &	s3 = span
	)		const

This operator returns a reference of the original array at a given coordinate.

You can pass af::seq, af::array, or an int as it's parameters. These references can be used for assignment or returning references to af::array objects.

Parameters

[in]	s0	is sequence of indices along the first dimension
[in]	s1	is sequence of indices along the second dimension
[in]	s2	is sequence of indices along the third dimension
[in]	s3	is sequence of indices along the fourth dimension

Returns

A reference to the array at the given index