munch("bar-baz", "-");

returns "". Is there a way to do this apart from writing my own function?

-- 
Simen

On Thu, Jan 15, 2009 at 8:55 AM, Simen Kjaeraas <simen.kjaras@gmail.com> wrote:
> munch("bar-baz", "-");
>
> returns "". Is there a way to do this apart from writing my own function?

I think you've got the behavior of munch backwards.  It will eat any characters that _are_ in the pattern string.  Since 'b' is not in the string "-", it returns immediately, since it didn't munch anything.

If you're looking for something to split up a string into tokens, you could either use find or split; the former could be used to slice the string one piece at a time, and the latter does it all at once at the expense of allocating a new array to put the slices in.

On Thu, 15 Jan 2009 15:30:51 +0100, Jarrett Billingsley <jarrett.billingsley@gmail.com> wrote:

> On Thu, Jan 15, 2009 at 8:55 AM, Simen Kjaeraas <simen.kjaras@gmail.com> wrote:
>> munch("bar-baz", "-");
>>
>> returns "". Is there a way to do this apart from writing my own function?
>
> I think you've got the behavior of munch backwards.  It will eat any
> characters that _are_ in the pattern string.  Since 'b' is not in the
> string "-", it returns immediately, since it didn't munch anything.
>
> If you're looking for something to split up a string into tokens, you
> could either use find or split; the former could be used to slice the
> string one piece at a time, and the latter does it all at once at the
> expense of allocating a new array to put the slices in.

Sorry, it seems I ferked up a bit there, yes (I did not in the code
in which I intended to use it). And yes, I certainly could use split,
I just wanted to use munch.

Example of what I wanted:

munch("1 + 3", "0123456789+-*")`;

I managed to fix it, though. Just put '-' as the first character of the string.

-- 
Simen