reading file byLine

[Namal via Digitalmars-d-learn]

On Wednesday, 2 September 2015 at 13:12:39 UTC, cym13 wrote:
> On Wednesday, 2 September 2015 at 13:01:31 UTC, Namal wrote:
>> Hello,
>>
>> I want to read a file line by line and store each line in a 
>> string. I found this example with byLine and ranges. First of 
>> all, do I need the range lib at all to do this and if so what 
>> is the range of the end of the file?
>
> You don't need the range lib at all, std.range provides 
> advanced functions to work with ranges but ranges are a general 
> concept. You need std.stdio though as this is doing file 
> operations.
>
> A way to do it is:
>
> void main() {
>     auto f = File("myfile");
>     string buffer;
>
>     foreach (line ; f.byLine) {
>         buffer ~= line;
>     }
>
>     f.close();
>     writeln(buffer);
> }
>
> Note that by default byLine doesn't keep the line terminator. 
> See http://dlang.org/phobos/std_stdio.html#.File.byLine for 
> more informations.

Thx, cym. I have a question about a D strings though. In c++ I 
would just reuse the string buffer with the "=" how can I clear 
the string after i store a line in the buffer and do something 
with it. I also tried to append a line to an array of strings but 
it failed because the line is a char?