Files as buffered InputRange

[berni]

On Friday, 5 July 2019 at 18:45:01 UTC, Les De Ridder wrote:
> On Friday, 5 July 2019 at 18:29:36 UTC, berni wrote:
>> On Friday, 5 July 2019 at 17:57:39 UTC, Les De Ridder wrote:
>>> File.byChunk[1] should do the trick.
>>>
>>> [1] https://dlang.org/library/std/stdio/file.by_chunk.html
>>
>> Not sure, if this is, what I'm looking for. I'd like to do 
>> something like
>>
>>> buffered_file.map!(a=>2*a).writeln();
>>
>> When I understand it right, with byChunk I'll have to take 
>> care about the end of the buffer, myself...
>
> You could use `joiner` from std.algorithm, e.g.
>     buffered_file.byChunk(4096).joiner.map!(a => 2 * a).writeln;

That's it. Thanks!