• Adnan (4/4) Feb 16 2020 What is the equivalent of Rust's chunks_exact()[1] method in D? I
• mipri (19/23) Feb 16 2020 $ rdmd --eval '"hello world".chunks(2).each!writeln'
• mipri (11/15) Feb 16 2020 And, after actually reading the Rust doc, I see that you want
• Mitacha (3/7) Feb 16 2020 It sounds similar to `slide`
• Adnan (5/15) Feb 17 2020 The key difference here is that slide seems to overlap, which is
• Basile B. (3/19) Feb 17 2020 Yeah your analysis is right. slide is specifically made to

Adnan <relay.public.adnan outlook.com> writes:

What is the equivalent of Rust's chunks_exact()[1] method in D? I 
want to iterate over a spitted string two chunks at a time.


[1] 
https://doc.rust-lang.org/beta/std/primitive.slice.html#method.chunks_exact

mipri <mipri minimaltype.com> writes:

On Monday, 17 February 2020 at 05:04:02 UTC, Adnan wrote:
 What is the equivalent of Rust's chunks_exact()[1] method in D? 
 I want to iterate over a spitted string two chunks at a time.


 [1] 
 https://doc.rust-lang.org/beta/std/primitive.slice.html#method.chunks_exact

$ rdmd --eval '"hello world".chunks(2).each!writeln'
he
ll
o
wo
rl
d

$ rdmd --eval '"hello 
world".chunks(2).map!"a.array.length".each!writeln'
2
2
2
2
2
1

Note the .array; each chunk is a range type.

$ rdmd --eval 'typeid("hello world".chunks(2).take(1)).writeln'
std.range.Take!(Chunks!string).Take

mipri <mipri minimaltype.com> writes:

On Monday, 17 February 2020 at 05:04:02 UTC, Adnan wrote:
 What is the equivalent of Rust's chunks_exact()[1] method in D? 
 I want to iterate over a spitted string two chunks at a time.


 [1] 
 https://doc.rust-lang.org/beta/std/primitive.slice.html#method.chunks_exact

And, after actually reading the Rust doc, I see that you want
to iterate over a string two chars at a time while discarding
any remaining 1-length chunk.

There isn't an equivalent of that.

A quick one is

auto chunks_exact(R)(R r, size_t n) {
     return r.take(r.length - r.length%n).chunks(n);
}

but to get the exact same behavior you'll want to return a
range type that stores the final chunk.

Mitacha <mateusz.mitaszka gmail.com> writes:

On Monday, 17 February 2020 at 05:04:02 UTC, Adnan wrote:
 What is the equivalent of Rust's chunks_exact()[1] method in D? 
 I want to iterate over a spitted string two chunks at a time.


 [1] 
 https://doc.rust-lang.org/beta/std/primitive.slice.html#method.chunks_exact

It sounds similar to `slide` 
https://dlang.org/phobos/std_range.html#slide

Adnan <relay.public.adnan outlook.com> writes:

On Monday, 17 February 2020 at 07:50:02 UTC, Mitacha wrote:
 On Monday, 17 February 2020 at 05:04:02 UTC, Adnan wrote:
 What is the equivalent of Rust's chunks_exact()[1] method in 
 D? I want to iterate over a spitted string two chunks at a 
 time.


 [1] 
 https://doc.rust-lang.org/beta/std/primitive.slice.html#method.chunks_exact

 It sounds similar to `slide` 
 https://dlang.org/phobos/std_range.html#slide

The key difference here is that slide seems to overlap, which is 
a big no-no for my current problem.

I have just gone with a classic for loop. Error prone, but just 
works.

Basile B. <b2.temp gmx.com> writes:

On Monday, 17 February 2020 at 09:41:35 UTC, Adnan wrote:
 On Monday, 17 February 2020 at 07:50:02 UTC, Mitacha wrote:
 On Monday, 17 February 2020 at 05:04:02 UTC, Adnan wrote:
 What is the equivalent of Rust's chunks_exact()[1] method in 
 D? I want to iterate over a spitted string two chunks at a 
 time.


 [1] 
 https://doc.rust-lang.org/beta/std/primitive.slice.html#method.chunks_exact

 It sounds similar to `slide` 
 https://dlang.org/phobos/std_range.html#slide

 The key difference here is that slide seems to overlap, which 
 is a big no-no for my current problem.

 I have just gone with a classic for loop. Error prone, but just 
 works.

Yeah your analysis is right. slide is specifically made to 
overlapp, if overlapping is not needed slide is not needed.