Re: Re: Dividing and format with regular expression the perl way

   $num =~ s/\.(\d).*/.$1/; # perform the rounding (as string)
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Oi Vay! Why (oh why) do you have that trailing dot-star in your regex? I see this with both neophyte and experienced RE users and I have yet figure out what misconception leads to this practice. Any ideas?

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Re: Re: Re: Dividing and format with regular expression the perl way by Roger (Parson) on Nov 27, 2003 at 20:42 UTC
Well, just drop trailing dot-star in the regex and see the result. ;-) I want to get rid of anything after the first decimal point, the tailing (.) let me do that. Of course I can also rewrite the regular expression as - `$num =~ s/\.(\d)\d+/.$1/; # perform the rounding (as string)` [download] But that requires 3 characters, and I am just too lazy*. Besides there is an assumption that whatever passed in is a floating point.	[reply] [d/l]
Re: Re: Re: Dividing and format with regular expression the perl way by ysth (Canon) on Nov 27, 2003 at 20:39 UTC
In this case, it removes anything after the first decimal. Perhaps you are thinking of needless .* at the end of a m//?	[reply]