Which is more efficient regular expression?
- by Vagnerr
I'm parsing some big log files and have some very simple string matches for example
if(m/Some String Pattern/o){
#Do something
}
It seems simple enough but in fact most of the matches I have could be against the start of the line, but the match would be "longer" for example
if(m/^Initial static string that matches Some String Pattern/o){
#Do something
}
Obviously this is a longer regular expression and so more work to match. However I can use the start of line anchor which would allow an expression to be discarded as a failed match sooner.
It is my hunch that the latter would be more efficient. Can any one back me up/shoot me down :-)
