Re: slow char({str})

[Ben Abbott]

On Jun 21, 2009, at 8:32 PM, Daniel J Sebald wrote:

> Ben Abbott wrote:
> > I noticed a substantial amount of time is needed to convert a cell   
> > string into a string
> > octave:50> tic; char ({repmat("a", [1, 100000])}); toc
> > Elapsed time is 11.9 seconds.
> > but ...
> > octave:51> tic; char ({repmat("a", [1, 100000])}{1}); toc
> > Elapsed time is 0.001117 seconds.
> > Can someone with skilled in c++ take a look?
>
> The hard part is locating a built-in function named "char".
>
> Dan

It is the first function defined in .../src/strfns.cc

Fixing it is not a task I trust myself with (as my experience with c\c+ 
+ is mimicing the work of others).

Ben