Hi All,

 Request you help on printing an array in below,

Eg:

Array ("T1", "T2", "T3", "T4", "T5")

Output required as below

T1,T2
T2,T3
T3,T4
T4,T5


From,
Vino.B

On Saturday, 3 February 2018 at 19:13:05 UTC, Vino wrote:
>  Request you help on printing an array in below,

Try looping through the array printing the current item followed by the item after the current item. Foreach with index may be helpful. Consider what happens on the last element.

On Saturday, 3 February 2018 at 19:19:00 UTC, Adam D. Ruppe wrote:
> On Saturday, 3 February 2018 at 19:13:05 UTC, Vino wrote:
>>  Request you help on printing an array in below,
>
> Try looping through the array printing the current item followed by the item after the current item. Foreach with index may be helpful. Consider what happens on the last element.

Hi Ruppe,

 I have tired it , it prints as expected but getting range violation when it reaches the last element

foreach(j, k; D1[].enumerate(1))
    writeln(k,D1[j]);

From,
Vino.B

On Saturday, 3 February 2018 at 19:13:05 UTC, Vino wrote:
> Hi All,
>
>  Request you help on printing an array in below,
>
> Eg:
>
> Array ("T1", "T2", "T3", "T4", "T5")
>
> Output required as below
>
> T1,T2
> T2,T3
> T3,T4
> T4,T5
>
>
> From,
> Vino.B

2.079 [1, 2] will ship with slide:

---
auto arr = ["T1", "T2", "T3", "T4", "T5"];
arr.slide(2).each!writeln;
---

https://run.dlang.io/is/YZsQCf

slide is super-powered with a lot of nice things to generate sliding windows lazily, but for this simple case, it's enough to do:

---
auto arr = ["T1", "T2", "T3", "T4", "T5"];
arr.zip(arr.dropOne).each!(a => writefln("%s,%s", a[0], a[1]));
---

https://run.dlang.io/is/R6IyYV


or of course, as Adam pointed out, good 'ld array iteration works too:

---
auto arr = ["T1", "T2", "T3", "T4", "T5"];
foreach (i; 0 .. arr.length - 1)
    writefln("%s,%s", arr[i], arr[i + 1]);
---
https://run.dlang.io/is/fb3JYI

[1] https://dlang.org/changelog/pending.html#std-range-slide
[2] https://dlang.org/phobos-prerelease/std_range.html#slide

On Saturday, 3 February 2018 at 19:28:01 UTC, Seb wrote:
> On Saturday, 3 February 2018 at 19:13:05 UTC, Vino wrote:
>> [...]
>
> 2.079 [1, 2] will ship with slide:
>
> ---
> auto arr = ["T1", "T2", "T3", "T4", "T5"];
> arr.slide(2).each!writeln;
> ---
>
> [...]

Hi Seb;

  Thank you very much.

From,
Vino.B

On Saturday, 3 February 2018 at 22:58:04 UTC, Vino wrote:
> On Saturday, 3 February 2018 at 19:28:01 UTC, Seb wrote:
>> On Saturday, 3 February 2018 at 19:13:05 UTC, Vino wrote:
>>> [...]
>>
>> 2.079 [1, 2] will ship with slide:
>>
>> ---
>> auto arr = ["T1", "T2", "T3", "T4", "T5"];
>> arr.slide(2).each!writeln;
>> ---
>>
>> [...]
>
> Hi Seb;
>
>   Thank you very much.
>
> From,
> Vino.B

Hi Seb,

 Was going through the change log of version v2.079, and it has most of the function that I require, so hope the release date of v2.079 would be 1st/March, correct me if i am wrong.

From,
Vino.B