On Wed, Feb 26, 2014 at 11:59:07PM +0000, bearophile wrote:
> H. S. Teoh:
> 
> >I'm writing a CLI program that uses File.ByLine to read input commands,
> 
> Isn't using readln() better for that? File.byLine is to read lines
> of files on disk.
[...]

Perhaps, but readln() isn't a range. The whole point was to use a range-based API for the interpreter so that there's no need to write two separate interfaces for the interpreter, one for stdin, one for a script file stored on disk.


T

-- 
Today's society is one of specialization: as you grow, you learn more and more about less and less. Eventually, you know everything about nothing.

On Thursday, 27 February 2014 at 00:07:47 UTC, H. S. Teoh wrote:
> On Wed, Feb 26, 2014 at 11:59:07PM +0000, bearophile wrote:
>> H. S. Teoh:
>> 
>> >I'm writing a CLI program that uses File.ByLine to read input
>> >commands,
>> 
>> Isn't using readln() better for that? File.byLine is to read lines
>> of files on disk.
> [...]
>
> Perhaps, but readln() isn't a range. The whole point was to use a
> range-based API for the interpreter so that there's no need to write two
> separate interfaces for the interpreter, one for stdin, one for a script
> file stored on disk.
>
>
> T

Just write a function that accepts a std.stdio.File parameter?

On Thu, Feb 27, 2014 at 12:16:21AM +0000, Jakob Ovrum wrote:
> On Thursday, 27 February 2014 at 00:07:47 UTC, H. S. Teoh wrote:
> >On Wed, Feb 26, 2014 at 11:59:07PM +0000, bearophile wrote:
> >>H. S. Teoh:
> >>
> >>>I'm writing a CLI program that uses File.ByLine to read input commands,
> >>
> >>Isn't using readln() better for that? File.byLine is to read lines
> >>of files on disk.
> >[...]
> >
> >Perhaps, but readln() isn't a range. The whole point was to use a range-based API for the interpreter so that there's no need to write two separate interfaces for the interpreter, one for stdin, one for a script file stored on disk.
> >
> >
> >T
> 
> Just write a function that accepts a std.stdio.File parameter?

Unfortunately, I use string arrays in my unittests (to avoid having to create separate unittest input files). So passing in File wouldn't work. Besides, File isn't a range, so that kinda defeats the purpose (my current hack of lazily constructing ByLine does work). I just find it unfortunate that such hacks are necessary to get off the ground.


T

-- 
It won't be covered in the book. The source code has to be useful for something, after all. -- Larry Wall