Databases
StackOverflow2013
Postsdbo
POWhat is the D way to write this?
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POWhat is the D way to write this?
    primarykey
    data
    text
    <p><a href="http://pastebay.com/182597" rel="nofollow noreferrer">I wrote this program in C</a> and also <a href="http://pastebay.com/185244" rel="nofollow noreferrer">in erlang</a></p> <p>To practice I tried to rewrite in D. A friend also wrote it in D but <a href="https://stackoverflow.com/questions/8690759/how-do-i-read-a-bufferedfile-using-readubyte-buffer-when-the-buffer-length-i">wrote it differently</a></p> <p><strong>The steps are simple. Pseudocode:</strong></p> <pre><code>While not end of file: X = Read ulong from file and covert to little endian Y = Read X bytes from file into ubyte array subtract 1 from each byte in Y save Y as an ogg file </code></pre> <p><strong>My D attempt:</strong></p> <pre><code>import std.file, std.stdio, std.bitmanip, std.conv, core.stdc.stdio : fread; void main(){ auto file = File("./sounds.pk", "r+"); auto fp = file.getFP(); ulong x; int i,cnt; while(fread(&amp;x, 8, 1, fp)){ writeln("start"); x=swapEndian(x); writeln(x," ",cnt++,"\n"); ubyte[] arr= new ubyte[x]; fread(&amp;arr, x, 1, fp); for(i=0;i&lt;x;i++) arr[i]-=1; std.file.write("/home/fold/wak_oggs/"~to!string(cnt)~".ogg",arr); } } </code></pre> <p>It seems I can't just use fread on arr. sizeof is 16 and it gives segmentation fault when I get to the subtracting part. I can't auto alloc a static array, or at least I don't know how. I also can't seem to use malloc because it gives me errors when I try to cast the void* when I loop through the bytes. How would you write this, or, what could I do better?</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USCommunity
    1. USJazz Man
    plurals
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POWhat is the D way to write this?
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POWhat is the D way to write this?
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POWhat is the D way to write this?
      1. This table or related slice is empty.
      1. VTUpMod
    1. COAre you sure `&arr` points to the first element of the array?
      singulars
      1. POWhat is the D way to write this?
      1. UShvd
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload