Very Stupid Regex question
seany via Digitalmars-d-learn
digitalmars-d-learn at puremagic.com
Thu Aug 7 09:49:05 PDT 2014
On Thursday, 7 August 2014 at 16:12:59 UTC, Justin Whear wrote:
> On Thu, 07 Aug 2014 16:05:16 +0000, seany wrote:
>
>> obviously there are ways like counting the match length, and
>> then using
>> the maximum length, instead of breaking as soon as a match is
>> found.
>>
>> Are there any other better ways?
>
> You're not really using regexes properly. You want to greedily
> match as
> much as possible in this case, e.g.:
>
> void main()
> {
> import std.regex;
> auto re = regex("ab(cd)?");
> assert("PREabcdPOST".matchFirst(re).hit == "abcd");
> assert("PREabPOST".matchFirst(re).hit == "ab");
>
> }
thing is, abcd is read from a file, and in the compile time, i
dont know if cd may at all be there or not, ir if it should be
ab(ef)
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