/^From:.*?([\w.-]+@[\w.-]+)/

[April]

Non-greedy '.*?' --
 the code took:0.03332 wallclock secs ( 0.03 usr +  0.00 sys =  0..03 CPU)

Greedy '[^\w.-]*' --
 the code took:0.016902 wallclock secs ( 0.03 usr +  0.00 sys =  0.03 CPU)

impressive!

 

[Uri Guttman]

A> ? seems a pretty interesting quatifier in re. it relates to both
A> optional and non-greedy.

that is wrong thinking. one is a quantifier (0 or 1 of the previous
thing). the other is a modifier (makes the previous quantifier
non-greedy). don't assume any sort of relationship because of the use of
? for both of those roles.

<yes, i am back! verizon screwed over my usenet feed and i finally
switched to a free text one>

uri

 

[April]

  A> ? seems a pretty interesting quatifier in re.  it relates to both
  A> optional and non-greedy.

that is wrong thinking. one is a quantifier (0 or 1 of the previous
thing). the other is a modifier (makes the previous quantifier
non-greedy). don't assume any sort of relationship because of the use of
? for both of those roles.

ok.. welcome back then, though I don't know you were gone.

 

[John W. Krahn]

A> ? seems a pretty interesting quatifier in re. it relates to both
A> optional and non-greedy.

that is wrong thinking. one is a quantifier (0 or 1 of the previous
thing). the other is a modifier (makes the previous quantifier
non-greedy). don't assume any sort of relationship because of the use of
? for both of those roles.

<yes, i am back!

Welcome back. ;-)

verizon screwed over my usenet feed and i finally
switched to a free text one>

Don't you just hate it when that happens. :-(



John