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Postings from March 2023
On 3/28/23 18:00, Martin McCormick wrote:
> Uri Guttman <uri@perlhunter.com> writes:
>> yes, but he kept the {5,} repeat count. so i just kept it too.
> Now that I know how this works, I will probably change to
> {4,} as this would match 4 or more digits. From reading the
> documentation, {4} means 4 and only 4. {4,6} means 4 but nothing
> else except 6. {N,} means N as a low limit but any number higher.
you got most of it. but {4,6} means any length from 4 to 6. 5 is fine
there.
think of it as a low and high pair of lengths. the left one is the
shortest count and the right side is the longest.
if you have only {4}, that is the same as {4,4}.
{5,} is 5 or more (high count is infinity, sort of).
{,5} is {0,5} or any number of repeats up to 5.
+ is just {1,} 1 or more
* is just {0,} 0 or more
? is just {0,1} 0 or 1 - makes that part optional
and don't forget that any quantifier can modify any thing before it.
that is more than just single chars. if you group something, you can
apply a quantifier to it.
uri
--
https://uriguttman.blogspot.com/
A Long Strange Trip
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