RePost: Help to convert a code to D

[Andre Artus]

On Monday, 26 August 2013 at 23:32:26 UTC, Andre Artus wrote:
> On Monday, 26 August 2013 at 13:30:38 UTC, Alexandre wrote:
>> Hi :)
>>
>> I'm starting with D language... and, I try to convert a C# code
>> to D...
>> So, my C# code, I get file informations, and, I create folders
>> with all days of month of specific year...
>>
>> So, that is my C# code...
>>
> -- SNIP --
>
>> So, to create directory and move files... I get the 
>> documentation
>> on that page: http://dlang.org/phobos/std_file.html
>>
>> But, I don't know, How I can get the file information and what 
>> is
>> the best way to create the directory's, so, I need some help :)
>>
>> I appreciate the help :)
>
> Okay, I banged together something that may be close to what you 
> want. I'm not a D expert, so someone is sure to point out some 
> areas for improvement.
>
> There does not seem to be any reason to use objects/classes for 
> what you want. In fact if I was to write it in C# I would make 
> the methods static.
>
> As an aside: it's not generally considered good practice to do 
> expensive computations or IO in a constructor (BOCTAOE).
>
> I did not split building the archive directory structure from 
> the file moving part. I prefer to only create a directory if 
> there is going to be a file in it. This may have a impact on 
> performance, but I suspect it is negligible. If it's an issue 
> measure, measure, measure.
>
>
> module main;
>
> import std.stdio, std.algorithm, std.conv;
> import std.array, std.random, std.datetime;
> import std.file, std.path, std.utf, std.string;
>
>
> int main(string[] argv)
> {
>   // string prefixed with 'r' similar to '@' in C#
>   auto searchPath = r"G:\archivetest\search";
>   auto archivePath = r"G:\archivetest\archive";
>
>   moveToArchive(searchPath, archivePath);
>
>   return 0;
> }
>
> void moveToArchive(string searchPath, string archivePath)
> {
>   // This ought to be a library thing.
>   immutable string[12] MesesDoAno =
>   [
>     "Janeiro", "Fevereiro",
>     "Marco", "Abril",
>     "Maio", "Junho",
>     "Julho", "Agosto",
>     "Setembro", "Outubro",
>     "Novembro", "Dezembro"
>   ];
>
>   // http://dlang.org/phobos/std_file.html#.dirEntries
>   auto de = dirEntries(searchPath,"*.RE{M,T}", 
> SpanMode.shallow, false);
>
>   // Sorting not required, just a personal preference
>   auto sortedFiles =
>     de.array.sort!((DirEntry x, DirEntry y)
>       => x.timeLastModified < y.timeLastModified);
>
>   foreach(DirEntry e; sortedFiles) {
>     // I'm being extra verbose here so that it's easy to follow 
> in a debugger
>
>     auto tlm = e.timeLastModified;

When testing I used timeLastModified as that created the greatest 
variability with the files I had at my disposal. If you need to 
use the file creation time then replace with timeCreated, as 
follows:

auto sortedFiles = de.array.sort!((x, y) => x.timeCreated < 
y.timeCreated);
foreach(DirEntry e; sortedFiles) {
   auto tlm = e.timeCreated;