[OT] Why mobile web apps are slow

[H. S. Teoh]

On Wed, Jul 10, 2013 at 01:01:01AM +0200, Adam D. Ruppe wrote:
> On Tuesday, 9 July 2013 at 22:40:31 UTC, bearophile wrote:
> >- A less allocating Phobos to produce a bit less garbage;
> 
> Yes, and options to pass output ranges to more functions too,
> instead of always returning gc allocated things.
[...]

+1. I think thus far we've only truly explored the input side of the
range concept. We should do more with output ranges -- they are a lot
more flexible than returning values (be that gc-allocated or not). You
can bypass a lot of unnecessary buffering by doing that (think to!string
and std.format, for example), which helps performance and reduces
garbage for the GC.

We should develop some good idioms for chaining / nesting output ranges,
so that what is today a bunch of string appends, say, could be a
UFCS-empowered chain of output ranges that basically writes the output
directly to its destination instead of sitting around in strings or
buffers, etc..


T

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