performance - regex match upto some character -

status updated

Often a situation is where you want to remove For example, a letter before some characters (immediately) , for example, suppose you have a text:

• does not start with a semicolon or period ,
• contains many sentences in it,
• no
• ends with a period,

  and you Sequencing from the beginning to the nearest semicolon or period Received want. Two strategies came into focus:

  1. / [^;.] * /
  2. /.*? [..] /

     I look at both ways in some of these ways with a little preference of the other strategies, and the code of others. Which is the better way? Is there a clear reason for liking one over the other, or better ways? I feel personally, the efficiency is one side, which is more complex than doing negation something (as with [^] ). But efficiency can also be a good reason to choose one over the other.

     I came up with my answer. In my question two regexes were not really speaking the same thing

     1. If you want to match up on a specific character, use it < P> /.*?

        1. If you want a match just before a certain character (besides) You should use:

           / [^;.] * /