Re: Adjacent item in a array

2018-02-11 Thread Vino via Digitalmars-d-learn

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


Re: Adjacent item in a array

2018-02-03 Thread Vino via Digitalmars-d-learn

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


Re: Adjacent item in a array

2018-02-03 Thread Seb via Digitalmars-d-learn

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


Re: Adjacent item in a array

2018-02-03 Thread Vino via Digitalmars-d-learn

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


Re: Adjacent item in a array

2018-02-03 Thread Adam D. Ruppe via Digitalmars-d-learn

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.


Adjacent item in a array

2018-02-03 Thread Vino via Digitalmars-d-learn

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