[Issue 4859] New: Another File.byChunk()

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=4859

           Summary: Another File.byChunk()
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: Phobos
        AssignedTo: nobody at puremagic.com
        ReportedBy: bearophile_hugs at eml.cc


--- Comment #0 from bearophile_hugs at eml.cc 2010-09-13 04:18:49 PDT ---
std.stdio.File.byChunk reuses the content of buffer across calls, but I think
the first call performs an allocation. Tango has shown that an important factor
for the performance of D programs is to minimize memory allocations.

So an overloaded byChunk may be added with a signature similar to (so the older
byChunk() is not removed, this is added):
chunks byChunk(void[] buffer);


So you may use it like this and avoid the first memory allocation too:

ubyte[4096] buffer;
foreach (ubyte[] chunk; stdin.byChunk(buffer[])) {
    ... use chunk ...
}

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