I'm trying to use algorithm.copy, but I get back nothing in the copy buffer.
How do I to copy an array of ubyte's?
iimport std.algorithm,
std.concurrency,
std.stdio;
void main()
{
enum bufferSize = 4;
auto tid = spawn(&fileWriter);
// Read loop
foreach (ubyte[] buffer; stdin.byChunk(bufferSize))
{
immutable(ubyte)[] copy_buffer;
copy(buffer, copy_buffer);
writeln(copy_buffer); // writes nothing
send(tid, copy_buffer);
}
}
void fileWriter()
{
while (true)
{
auto buffer = receiveOnly!(immutable(ubyte)[])();
// writeln(buffer);
}
}
Andrej Mitrovic Wrote:
> This is from TDPL page 407:
>
> import std.algorithm,
> std.concurrency,
> std.stdio;
>
> void main()
> {
> enum bufferSize = 1024 * 100;
> auto tid = spawn(&fileWriter);
>
> // Read loop
> foreach (immutable(ubyte)[] buffer; stdin.byChunk(bufferSize))
> {
> send(tid, buffer);
> }
> }
>
> void fileWriter()
> {
> // write loop
> while (true)
> {
> auto buffer = receiveOnly!(immutable(ubyte)[])();
> tgt.write(buffer);
> }
> }
>
> Error:
> C:\DMD\dmd2\windows\bin\..\..\src\phobos\std\stdio.d(1943):
> Error: cannot implicitly convert expression (buffer) of type ubyte[]
> to immutable(ubyte)[]
>
> Yet interestingly I can't use type inference:
>
> foreach (buffer; stdin.byChunk(bufferSize))
> {
> send(tid, buffer);
> }
>
> Error: stdin_stdout_copy.d(11): Error: cannot infer type for buffer
>
> But in the original code I get back a mutable ubyte[] which I can't
> implicitly convert to immutable (I'd need a copy first). There's no .dup or
> .idup property for stdin.byChunk. So what am I supossed to do here?
>
>
