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Postings from August 2000
* Johan Vromans (JVromans@squirrel.nl) [24 Aug 2000 06:39]:
> iain truskett <ict@eh.org> writes:
> > It's not *that* slow. Just means the parser is looking for /* as
> > well as */ ...
> And "/*" and ""/*" and '/*' and qw(*/) and #*/ and \#*/ and m/.*/ ...
Of course. But see below.
> With MLC, you need to _parse_ the comments. What happens if you find a
> unterminated quoted string in a commented out section? Guess what
> happens when you have the following comment in a java program:
> /* File: C:\user\jv\demo.java */
> t.java:1: Invalid escape character.
> /* File: C:\user\jv\demo.java */
In that situation, I would say that the java compiler isn't really doing
what it should be doing. i.e. That looks like a bug, not a feature. gcc
does no such thing with its comments.
> With SLC, discarding a line if it starts with a # (after optional
> whitespace) is straightforward, fail safe, and fast.
Almost. You can have # in other places on the line. It doesn't have to
be at the start (with or without whitespace).
i.e. print # this is a print statement
$foobar # this is still the print statement
, # a comma!
/moo#/ # here's the comment
,$#array,# another one.
q#moo# # ooh!
; # ok. i'm done.
You still have to parse.
cheers,
--
iain truskett, aka Koschei. <http://eh.org/~koschei/>
Q: How do I find the largest element in an array?
A: Write a foreach elements one at a time, and stop when you get to
the largest one. -- perliaq.