Repeat and chunks

[Meta via Digitalmars-d-learn]

On Monday, 24 October 2016 at 15:28:50 UTC, Saurabh Das wrote:
> The documentation of 
> https://dlang.org/phobos/std_range.html#.chunks mentions 
> something about evenly divisible by chunkSize – perhaps that is 
> the cause of the assert fail. Not 100% sure why that's there 
> though.
>
> Thanks,
> Saurabh

Yes, that's correct. This is the overload of `repeat` in question:

https://dlang.org/phobos/std_range.html#.repeat.2

Take!(Repeat!T) repeat(T)(T value, size_t n);

Repeats value exactly n times. Equivalent to take(repeat(value), 
n).

Examples:
import std.algorithm : equal;

assert(equal(5.repeat(4), 5.repeat().take(4)));

The variant of repeat that takes a second argument returns a 
range with a length; it is not an infinite range, unlike the 
first overload of repeat. So for the OP's code:

repeat(8, 10).chunks(3).writeln();

This will throw an AssertError because 10 is not evenly divisible 
by 3.