On Friday, 11 May 2012 at 20:06:45 UTC, Era Scarecrow wrote:
> On Friday, 11 May 2012 at 19:24:49 UTC, Graham Fawcett wrote:
>> It sure would. I suspect that Jesse's approach...
>>
>>  readText("file.in").splitLines()
>>
>> ...would be the most efficient way if you need an actual 
>> array: slurp the whole file at once, then create an array of 
>> memory-sharing slices.
>
>  Doesn't sound hard.. I could likely write a quick line 
> splitting ranges fairly quickly, assuming \r and \n are the 
> newlines, if there's new ones I'm unaware of then it may not 
> work quite as well as you want :P
>
>  Let's see....

Hold on! It already exists:

std.file.readText
std.string.splitLines

Graham

On Friday, 11 May 2012 at 19:24:49 UTC, Graham Fawcett wrote:
> On Friday, 11 May 2012 at 18:57:52 UTC, Steven Schveighoffer 
> wrote:
>> On Fri, 11 May 2012 11:00:16 -0400, Paul <phshaffer@gmail.com> 
>> wrote:
>>
>>> I would like to read a complete file in one statement and 
>>> then process it line by line.
>>>
>>> foreach (line; MyFile)
>>> etc.
>>>
>>> Is it possible to read a file into and array of lines?
>>> Thanks
>>
>> Would something like this work?
>>
>> auto arr = array(map!"a.idup"(File("file.txt").byLine()));
>>
>
> It sure would. I suspect that Jesse's approach...
>
>   readText("file.in").splitLines()
>
> ...would be the most efficient way if you need an actual array: 
> slurp the whole file at once, then create an array of 
> memory-sharing slices.
>
> I look forward to the great std.stdio/std.file unification of 
> 201x, when I won't have to look in two modules for file-reading 
> functions. :)
>
> Graham
GULP!  This language is so powerful!  Do I dare ask a followup 
question?
I will try the readText.splitLines().  Thanks to all!

On Friday, 11 May 2012 at 18:02:54 UTC, Jesse Phillips wrote:
> On Friday, 11 May 2012 at 15:00:18 UTC, Paul wrote:
>> I would like to read a complete file in one statement and then 
>> process it line by line.
>>
>> foreach (line; MyFile)
>> etc.
>>
>> Is it possible to read a file into and array of lines?
>> Thanks
>
> Something like:
>
> import std.file;
> import std.string;
>
> void main() {
>      foreach(line; readText("file.in").splitLines()) ...
> }

Thanks Jesse.
I'm finding that I can't just substitute args[1] for a text 
string.  Is there a clever way to use args[] in place of your 
"file.in"?

On Friday, 11 May 2012 at 20:40:23 UTC, Paul wrote:
> On Friday, 11 May 2012 at 18:02:54 UTC, Jesse Phillips wrote:
>> void main() {
>>     foreach(line; readText("file.in").splitLines()) ...
>> }
>
> Thanks Jesse.
> I'm finding that I can't just substitute args[1] for a text 
> string.  Is there a clever way to use args[] in place of your 
> "file.in"?

Why not?

void main(string[] args) {
    if(args.length > 1) {
        foreach(line; readText(args[1]).splitLines()) ...
    }
}

On Friday, 11 May 2012 at 20:43:47 UTC, Era Scarecrow wrote:
> On Friday, 11 May 2012 at 20:40:23 UTC, Paul wrote:
>> On Friday, 11 May 2012 at 18:02:54 UTC, Jesse Phillips wrote:
>>> void main() {
>>>    foreach(line; readText("file.in").splitLines()) ...
>>> }
>>
>> Thanks Jesse.
>> I'm finding that I can't just substitute args[1] for a text 
>> string.  Is there a clever way to use args[] in place of your 
>> "file.in"?
>
> Why not?
>
> void main(string[] args) {
>     if(args.length > 1) {
>         foreach(line; readText(args[1]).splitLines()) ...
>     }
> }

This is my program:

import std.stdio,std.string,std.file;

// Main function
void main(string[] args){
    if (args.length > 1){
        foreach(line; readText(args[1]).splitLines()) {
            writefln("line : %s", line);
            //if (n > 10) break;
        }
    }
}

I get this:

std.utf.UTFException@std\utf.d(644): Invalid UTF-8 sequence (at 
index 1)
----------------
41E424
41E29B
4020F3
4020C1
402042
4077A4
4077E3
4073F3
438781
----------------

These are the first few lines of my text file:
NAME   = XPAW01_STA
  TYPE   = COMPND
  DESCRP =
  PERIOD = 1
  PHASE  = 0
  ON     = 0
  INITON = 2
  CINHIB = 0
  GR1DV1 =
  GR1DV2 =
  GR1DV3 =
  GR1DV4 =

On Friday, 11 May 2012 at 21:13:41 UTC, Paul wrote:
> std.utf.UTFException@std\utf.d(644): Invalid UTF-8 sequence (at 
> index 1)

  What are you reading? If it's regular text (0-127) then you
shouldn't have an issue. However 128-255 (or, -1 to -127) are
treated differently. D by default is UTF-8 or unicode encoded,
meaning it wants to see valid encodings that follow that
structure.

  Unfortunately I don't have good references of how to simply
convert old Ascii to a utf-8 (within Phobos). I have my own
workaround...