topic Re: How will the row characters be matched from left to right to the last decimal point using the re? in Discussions

How will the row characters be matched from left to right to the last decimal point using the re?

lala — Fri, 09 Jun 2023 16:59:20 GMT

So what's left over on the right-hand side is the non-green part of each row.

Thanks!

Craige_Hales — Mon, 16 May 2022 14:05:33 GMT

I think you are asking for a regex to match all but the last segment.

regex("aaa.bbb.ccc.ddd","([^\.]+\.)+")

aaa.bbb.ccc.

[^\.] means a single character that is not a period

[^\.]+ means one or more of those characters

[^\.]+\. means match the period

([^\.]+\.)+ means do all that one or more times

lala — Mon, 16 May 2022 23:37:12 GMT

na1=Regex("aaa.bbb.ccc.ddd","[^\..]+$");

Craige_Hales — Tue, 17 May 2022 00:21:35 GMT

regex is not the best way to attack this problem.

word(-1,"aaa.bbb.ccc.this is it",".") // "this is it"

will get the last segment efficiently.

word([1 -2],"aaa.bbb.ccc.this is it",".") // "aaa.bbb.ccc"

will get the left part efficiently.