Re: How to convert a chunks result to a two-dimensional array

[Salih Dincer via Digitalmars-d-learn]

On Saturday, 15 January 2022 at 06:43:05 UTC, forkit wrote:
On Saturday, 15 January 2022 at 03:48:41 UTC, Steven 
Schveighoffer wrote:


int[][] arrayOfArrays = iota(1,16).
array.chunks(5).array;

-Steve


All answers were helpful ;-)

But I like this one the best,
because I find it both easier to remember, and easier to 
expand...


I loved it too.  I think this is because chunks() is very 
functional. I should mention this in the Turkish Forum.


Salih

Re: How to convert a chunks result to a two-dimensional array

[forkit via Digitalmars-d-learn]

On Saturday, 15 January 2022 at 03:48:41 UTC, Steven 
Schveighoffer wrote:


Alternatively (with only one allocation for the int[] data):

```d
int[][] arrayOfArrays = iota(1, 16).array.chunks(5).array;
```

-Steve


All answers were helpful ;-)

But I like this one the best, because I find it both easier to 
remember, and easier to expand upon (i.e. for each extra [] just 
add another .chunks(val).array


e.g

int[][][] arrayOfArraysV4 = iota(1, 
16).array.chunks(2).array.chunks(3).array;


int[][][][] arrayOfArraysV5 = iota(1, 
16).array.chunks(2).array.chunks(3).array.chunks(4).array;

Re: How to convert a chunks result to a two-dimensional array

[Steven Schveighoffer via Digitalmars-d-learn]

On 1/14/22 9:41 PM, Paul Backus wrote:

On Saturday, 15 January 2022 at 01:49:14 UTC, forkit wrote:
I want int[][] like this -> [[1, 2, 3, 4, 5], [6, 7, 8, 9, 10], [11, 
12, 13, 14, 15]]


Any help will be appreciated.

note: to2Darray is not a valid statement ;-)


// ---
module test;

import std;

void main()
{
    int[][] arrayOfarrays = iota(1, 16).chunks(5).to2Darray; // how to 
convert this into [][]

}
// ---


import std.algorithm: map;
import std.array: array;

int[][] arrayOfArrays = iota(1, 16).chunks(5).map!array.array;


Alternatively (with only one allocation for the int[] data):

```d
int[][] arrayOfArrays = iota(1, 16).array.chunks(5).array;
```

-Steve

Re: How to convert a chunks result to a two-dimensional array

[H. S. Teoh via Digitalmars-d-learn]

On Sat, Jan 15, 2022 at 01:49:14AM +, forkit via Digitalmars-d-learn wrote:
[...]
> int[][] arrayOfarrays = iota(1, 16).chunks(5).to2Darray; // how to
> convert this into [][]
[...]

auto arrayOfArrays = iota(1, 16).chunks(5).map!(r => r.array).array;


T

-- 
Winners never quit, quitters never win. But those who never quit AND never win 
are idiots.

Re: How to convert a chunks result to a two-dimensional array

[forkit via Digitalmars-d-learn]

On Saturday, 15 January 2022 at 02:41:08 UTC, Paul Backus wrote:


import std.algorithm: map;
import std.array: array;

int[][] arrayOfArrays = iota(1, 16).chunks(5).map!array.array;


oh. thanks!

also it seems I reposted the same question (didn't realise this 
one got posted)

Re: How to convert a chunks result to a two-dimensional array

[Paul Backus via Digitalmars-d-learn]

On Saturday, 15 January 2022 at 01:49:14 UTC, forkit wrote:
I want int[][] like this -> [[1, 2, 3, 4, 5], [6, 7, 8, 9, 10], 
[11, 12, 13, 14, 15]]


Any help will be appreciated.

note: to2Darray is not a valid statement ;-)


// ---
module test;

import std;

void main()
{
int[][] arrayOfarrays = iota(1, 16).chunks(5).to2Darray; // 
how to convert this into [][]

}
// ---


import std.algorithm: map;
import std.array: array;

int[][] arrayOfArrays = iota(1, 16).chunks(5).map!array.array;

How to convert a chunks result to a two-dimensional array

[forkit via Digitalmars-d-learn]

I want int[][] like this -> [[1, 2, 3, 4, 5], [6, 7, 8, 9, 10], 
[11, 12, 13, 14, 15]]


Any help will be appreciated.

note: to2Darray is not a valid statement ;-)


// ---
module test;

import std;

void main()
{
int[][] arrayOfarrays = iota(1, 16).chunks(5).to2Darray; // 
how to convert this into [][]

}
// ---