On Sat, Sep 29, 2001 at 03:47:49PM +0000, chasm@[...].rift wrote:
>  >> Regex's are useful and powerful.  But they're also very easy to
>  >> abuse.  I've actually seen the following Perl code:
>  >> 
>  >>     if ($filename =~ /\.txt$/) { ... }
>  >> 
>  >> ...
>  >>
>  >> or, much more preferably:
>  >> 
>  >>     if filename[-4:] == '.txt':
>  >
>  >Overall, the Perl code's better.  It didn't have to hard-code the
>  >length of the string.
>  
>  	ext = '.txt'
>  	if filename[-len(ext):] == ext:
>  
>  	etc...

Or
	if filename.endswith(ext):
		# etc...

which is the reason the startswith() and endswith() string methods
exist. :-)

Cheers,
Malcolm

-- 
On the other hand, you have different fingers.

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