[Tutor] Regular expression

[Chad Crabtree]

Danny Yoo wrote:

>Hi Kumar,
>
>
>Hmmm!  Ok, it sounds like you're making some kind of mini-language
to make
>it easier to type out Graphviz dotty files.  Each one of these
out-edge
>descriptions appears to have some kind of structure:
>
>    out_edge_description ::=
>       open_brace
>       start_vertex_name
>       pipe_symbol
>       a_bunch_of_colon_separated_names
>       close_brace
>
>We can parse this pretty informally, by using regular expressions. 
But
>there's also a fairly systematic way we can attack this:  we can go
all
>out and use a token/parser approach.  Would you like to hear about
that?
>  
>
I don't know about kumar but I would love to hear about this because 
I've been reading about it but it has not sunk in yet.

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