I agree about the theory and with what you said about $read and filter
Quote:
Multiple $reads could potentially be faster if the matches are found near the start of the file, as it will have less data to go through than /filter.
I made another test to check that :

%n is the number of match we want from the start of the file (just some copy/paste of the previous file) :
Code:
alias benchread1 {
  var %t $ticks ,%a 1000
  while (%a) {
    var %l 1,%n 2
    while ($read(test.txt, wn, *}}}}}}}}}}*,%l) != $null) && (%n) { noop match the file on line $readn : $v1 | %l = $readn + 1 | dec %n }
    dec %a
  } 
  echo -a in $calc($ticks - %t) ms
}

alias _test if (%n) noop match the file on line $1 : $2- | dec %n
alias benchread2 { 
  var %t $ticks,%a 1000
  while (%a) {
    set -u %n 2
    filter -fnk test.txt _test *}}}}}}}}}}*
    dec %a 
  } 
  echo -a in $calc($ticks - %t) ms
}
Using this file, /filter is slower than $read for %n <= 4 in my test

Quote:
In any event, was just offering another alternative
Yeah, it's fine, but the purpose of my post was to compare two methods involving $read, not to do the job the fastest ways possible






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